There are at least 31 game

Game fish

Game fish are fish pursued for sport by recreational anglers. They can be freshwater or marine fish. Game fish can be eaten after being caught, though increasingly anglers practise catch and release to improve fish populations. Some game fish are also targeted commercially, particularly...

 and 59 non-game fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 species known to occur in Montana

Montana

Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

.. Among Montana's fish, three are listed as endangered

Endangered species

An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...

 or threatened

Threatened species

Threatened species are any speciesg animals, plants, fungi, etc.) which are vulnerable to endangerment in the near future.The World Conservation Union is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories,...

 species and the Montana Department of Fish, Wildlife and Parks

Montana Department of Fish, Wildlife and Parks

The Montana Department of Fish, Wildlife and Parks is a government agency in the executive branch state of Montana in the United States with responsibility for protecting sustainable fish, wildlife, and state-owned park resources in Montana for the purpose of providing recreational activities...

 lists a number of species as Species of Concern.

Species are listed by common name, scientific name, typical habitat and occurrence. Common and scientific names from the Montana Field Guide

Trout

Order: Salmoniformes, Family: Salmonidae

Salmonidae

Salmonidae is a family of ray-finned fish, the only living family currently placed in the order Salmoniformes. It includes salmon, trout, chars, freshwater whitefishes and graylings...

 

• Native species
  • Westslope Cutthroat Trout
    Westslope cutthroat trout
    The westslope cutthroat trout , also known as the blackspotted cutthroat, is a subspecies of the cutthroat trout and is a freshwater fish in the salmon family of order Salmoniformes. The cutthroat is the Montana state fish...
    
    , Oncorhynchus clarkii lewisi
  • Yellowstone Cutthroat Trout
    Yellowstone cutthroat trout
    The Yellowstone cutthroat trout is a subspecies of the cutthroat trout and is a freshwater fish in the salmon family of the order Salmoniformes. Native only to a few U.S...
    
    , Oncorhynchus clarkii bouvieri
  • Columbia River Redband Trout, Oncorhynchus mykiss gairdneri
  • Bull trout
    Bull trout
    The bull trout, Salvelinus confluentus, is a char of the family Salmonidae native to northwestern North America. Historically, S. confluentus has been known as the "Dolly Varden" , but was re-classified as a separate species in 1980. Bull trout are listed as a threatened species under the U.S....
    
    , Salvelinus confluentus
  • Arctic Grayling
    Arctic grayling
    Arctic grayling is a species of freshwater fish in the salmon family of order Salmoniformes. It comprises five subspecies native to the Nearctic and Palearctic ecozones. T. a. arcticus is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper...
    
    , Thymallus arcticus
  • Lake trout
    Lake trout
    Lake trout is a freshwater char living mainly in lakes in northern North America. Other names for it include mackinaw, lake char , touladi, togue, and grey trout. In Lake Superior, they can also be variously known as siscowet, paperbellies and leans...
    
    , Salvelinus namaycush

• Non-native, exotic species
  • Brown trout
    Brown trout
    The brown trout and the sea trout are fish of the same species....
    
    , Salmo trutta
  • Golden trout
    Golden Trout
    The golden trout is a sub-species of the rainbow trout, and it closley resembles the juvenile Rainbow trout. The fish is also known as the California golden trout and is native to Golden Trout Creek, Volcano Creek and the South Fork Kern River. Another variant, O. m...
    
    , Oncorhynchus aguabonita
  • Rainbow trout
    Rainbow trout
    The rainbow trout is a species of salmonid native to tributaries of the Pacific Ocean in Asia and North America. The steelhead is a sea run rainbow trout usually returning to freshwater to spawn after 2 to 3 years at sea. In other words, rainbow trout and steelhead trout are the same species....
    
    , Oncorhynchus mykiss
  • Brook trout
    Brook trout
    The brook trout, Salvelinus fontinalis, is a species of fish in the salmon family of order Salmoniformes. In many parts of its range, it is known as the speckled trout or squaretail. A potamodromous population in Lake Superior are known as coaster trout or, simply, as coasters...
    
    , Salvelinus fontinalis
  • Chinook Salmon
    Chinook salmon
    The Chinook salmon, Oncorhynchus tshawytscha, is the largest species in the pacific salmon family. Other commonly used names for the species include King salmon, Quinnat salmon, Spring salmon and Tyee salmon...
    
    , Oncorhynchus tshawytscha
  • Kokanee Salmon, Oncorhynchus nerka
  • Cisco
    Cisco
    Cisco may refer to:Companies:*Cisco Systems, a computer networking company* Certis CISCO, corporatised entity of the former Commercial and Industrial Security Corporation in Singapore...
    
    , Coregonus artedi
  • Lake Whitefish
    Lake whitefish
    The lake whitefish , also called the Sault whitefish or gizzard fish, is a species of freshwater whitefish from North America. Lake whitefish are found throughout much of Canada and parts of the northern United States, including all of the Great Lakes. A valuable commercial fish, they are also...
    
    , Coregonus clupeaformis
  • Mountain Whitefish
    Mountain whitefish
    The mountain whitefish is one of the most widely distributed salmonid fish of western North America. It is found from the Mackenzie River drainage in Northwest Territory, Canada south through western Canada and the northwestern USA in the Pacific, Hudson Bay and upper Missouri River basins to the...
    
    , Prosopium williamsoni
  • Pygmy Whitefish
    Pygmy Whitefish
    The pygmy whitefish, Prosopium coulterii, is a freshwater whitefish of the genus Prosopium in the family Salmonidae. Found in the mountain streams and lakes west of North America, it also has isolated populations in Lake Superior and in Ekityki Lake, Chukchi Peninsula.- Description :The pygmy...
    
    , Prosopium coulteri

Paddlefish

Order: Acipenseriformes

Acipenseriformes

Acipenseriformes are an order of primitive ray-finned fishes that includes the sturgeons and paddlefishes, as well as some extinct families.Notable characteristics of Acipenseriformes include:* Cartilaginous endoskeleton* Lack of vertebral centrum...

, Family: Polyodontidae 

• Paddlefish
  Paddlefish
  Paddlefish are primitive Chondrostean ray-finned fishes. The paddlefish can be distinguished by its large mouth and its elongated, spatula-like snout, called a rostrum, which is longer than the rest of the head...
  
  , Polyodon spathula

Pike

Order: Esociformes

Esociformes

Esociformes is a small order of ray-finned fish, with two families, the Umbridae and the Esocidae . The pikes of genus Esox give the order its name. There are ten species — five in each family....

, Family: Esocidae 

• Native species
  • Northern Pike
    Northern Pike
    The northern pike , is a species of carnivorous fish of the genus Esox...
    
    , Esox lucius
• Non-native, exotic species
  • Tiger Muskellunge
    Tiger muskellunge
    The tiger muskellunge is a carnivorous fish and is the usually sterile, hybrid offspring of the true muskellunge and the northern pike . It lives in freshwater and its range extends to Canada, the Northeast and the Midwest parts of the United States. It grows quickly; in one study tiger muskie...
    
    , Esox masquinongy x lucius

Bass, Sunfish

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Centrarchidae

Centrarchidae

The sunfishes are a family of freshwater ray-finned fish belonging to the order Perciformes. The type genus is Centrarchus . The family's 27 species includes many fishes familiar to North Americans, including the rock bass, largemouth bass, bluegill, pumpkinseed, and crappies...

 

• Non-native, exotic species
  • Black Crappie, Pomoxis nigromaculatus
  • Largemouth Bass
    Largemouth bass
    The largemouth bass is a species of black bass in the sunfish family native to North America . It is also known as widemouth bass, bigmouth, black bass, bucketmouth, Potter's fish, Florida bass, Florida largemouth, green bass, green trout, linesides, Oswego bass, southern largemouth...
    
    , Micropterus salmoides
  • Smallmouth Bass
    Smallmouth bass
    The smallmouth bass is a species of freshwater fish in the sunfish family of the order Perciformes. It is the type species of its genus...
    
    , Micropterus dolomieu
  • White Crappie, Pomoxis annularis

Perch

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Percidae

Percidae

The Percidae are a family of perciform fish found in fresh and brackish waters of the Northern Hemisphere. The family contains about 200 species in ten genera...

 

• Native species
  • Sauger
    Sauger
    The sauger is a freshwater perciform fish of the family Percidae which resembles its close relative the walleye. They are members of the largest vertebrate order, Perciforms. They are the most migratory percid species in North America. Saugers obtain two dorsal fins, the first is spiny and the...
    
    , Sander canadensis
  • Yellow Perch
    Yellow perch
    The yellow perch is a species of perch found in the United States and Canada, where it is often referred to by the shortform perch. Yellow perch look similar to the European perch, but are paler and more yellowish, with less red in the fins. They have six to eight dark, vertical bars on their sides...
    
    , Perca flavescens

• Non-native, exotic species
  • Walleye
    Walleye
    Walleye is a freshwater perciform fish native to most of Canada and to the northern United States. It is a North American close relative of the European pikeperch...
    
    , Sander vitreus

Catfish

Order: Siluriformes, Family: Ictaluridae

Ictaluridae

The Ictaluridae, sometimes called Ictalurids, are a family of catfish native to North America, where they are important food fish and sometimes as a sport fish. They include fish commonly known as bullheads, madtoms, channel catfish, and blue catfish....

 

• Native species
  • Channel Catfish
    Channel catfish
    Channel catfish, Ictalurus punctatus, is North America's most numerous catfish species. It is the official fish of Missouri, Iowa, Nebraska, Kansas, and Tennessee, and is informally referred to as a "channel cat". In the United States they are the most fished catfish species with approximately 8...
    
    , Ictalurus punctatus

Sturgeon

Order: Acipenseriformes, Family: Acipenseridae

• Native species
  • Pallid Sturgeon
    Pallid sturgeon
    The pallid sturgeon is an endangered species of ray-finned fish, endemic to the waters of the Missouri and lower Mississippi River basins of the United States...
    
    , Scaphirhynchus albus
  • Shovelnose Sturgeon
    Shovelnose sturgeon
    The shovelnose sturgeon, Scaphirhynchus platorynchus, is the smallest species of freshwater sturgeon native to the United States of America. It is often called "hackleback", "sand sturgeon", or "switchtail." Switchtail refers to the long filament found on the upper lobe of the caudal fin...
    
    , Scaphirhynchus platorynchus
  • White Sturgeon
    White sturgeon
    The white sturgeon , also known as the Pacific sturgeon, Oregon sturgeon, Columbia sturgeon, Sacramento sturgeon, and California white sturgeon, is a sturgeon which lives along the west coast of North America from the Aleutian Islands to Central...
    
    , Acipenser transmontanus

Burbot

Order: Gadiformes

Gadiformes

Gadiformes is an order of ray-finned fish, also called the Anacanthini, that includes the cod and its allies. Many major food fish are in this order. They are found in marine waters throughout the world, and there are also a small number of freshwater species.Common characteristics include the...

, Family: Gadidae

Gadidae

Gadidae is a family of marine fish, included in the order Gadiformes. It includes the cod, haddock, whiting, and pollock.Most species of gadid are found in temperate waters of the northern hemisphere, although there are some exceptions. They are generally medium sized fish, and are distinguished...

 

• Native species
  • Burbot
    Burbot
    The burbot is the only gadiform fish inhabiting freshwaters. It is also known as mariah, the lawyer, and eelpout. It is closely related to the marine common ling and the cusk...
    
    , Lota lota

Bass, Sunfish

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Centrarchidae

Centrarchidae

The sunfishes are a family of freshwater ray-finned fish belonging to the order Perciformes. The type genus is Centrarchus . The family's 27 species includes many fishes familiar to North Americans, including the rock bass, largemouth bass, bluegill, pumpkinseed, and crappies...

 

• Non-native, exotic species
  • Bluegill
    Bluegill
    The Bluegill is a species of freshwater fish sometimes referred to as bream, brim, or copper nose. It is a member of the sunfish family Centrarchidae of the order Perciformes.-Range and distribution:...
    
    , Lepomis macrochirus
  • Green Sunfish
    Green sunfish
    The green sunfish is a species of freshwater fish in the sunfish family of order Perciformes. A panfish popular with anglers, the green sunfish is also kept as an aquarium fish by hobbyists. They are usually caught by accident, while fishing for other game fish...
    
    , Lepomis cyanellus
  • Pumpkinseed
    Pumpkinseed
    The pumpkinseed sunfish is a freshwater fish of the sunfish family of order Perciformes. It is also referred to as "pond perch", "common sunfish", "punkys", and "sunny".-Range and distribution:...
    
    , Lepomis gibbosus
  • Rock Bass
    Rock bass
    The rock bass , also known as the rock perch, goggle-eye, or red eye is a species of freshwater fish in the sunfish family of order Perciformes. They are similar in appearance to smallmouth bass but are usually quite a bit smaller...
    
    , Ambloplites rupestris

Perch

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Percidae

Percidae

The Percidae are a family of perciform fish found in fresh and brackish waters of the Northern Hemisphere. The family contains about 200 species in ten genera...

 

• Native species
  • Iowa Darter, Etheostoma exile

Temperate Basses

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Moronidae

Moronidae

Temperate Bass is in the Family PercichthyidaeHow to know the freshwater fishes Samuel Eddy, James C. Underhill.Moronidae, also known as the "temperate basses", is a family of perciform fish consisting of 6 freshwater and marine species...

 

• Non-native, exotic species
  • White Bass
    White bass
    The white bass or sand bass The white bass or sand bass The white bass or sand bass (MoroneIt is the state fish of Oklahoma.- Range :White bass are distributed widely across the United States, particularly in the midwest. They are very abundant in Pennsylvania and the area around Lake Erie...
    
    , Morone chrysops

Catfish

Order: Siluriformes, Family: Ictaluridae

Ictaluridae

The Ictaluridae, sometimes called Ictalurids, are a family of catfish native to North America, where they are important food fish and sometimes as a sport fish. They include fish commonly known as bullheads, madtoms, channel catfish, and blue catfish....

 

• Native species
  • Stonecat, Noturus flavus

• Non-native, exotic species
  • Black Bullhead
    Black bullhead
    The black bullhead, Ameiurus melas, is a species of bullhead catfish. Like other bullhead catfish, it has the ability to thrive in waters that are low in oxygen, brackish, turbid and/or very warm. It also has barbels located near its mouth, a broad head, spiny fins and no scales...
    
    , Ameiurus melas
  • Yellow Bullhead
    Yellow bullhead
    The yellow bullhead, is a species of bullhead catfish. Yellow bullhead are typically yellow-olive to slatey-black on the back and sometimes mottled depending on habitat. The sides are lighter and more yellowish while the underside of the head and body are bright yellow, yellow white, or bright...
    
    , Ameiurus natalis

Drum

Order: Perciformes

Perciformes

The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

, Family: Sciaenidae

Sciaenidae

Sciaenidae is a family of fish commonly called drums, croakers, or hardheads for the repetitive throbbing or drumming sounds they make...

 

• Native species
  • Freshwater Drum
    Freshwater Drum
    -Introduction:The freshwater drum, Aplodinotus grunniens, is a fish endemic to North and Central America. It is the only species in the genus Aplodinotus. The Freshwater drum is a member of the family Sciaenidae, and is the only member of the species that inhabits freshwater for its entire life...
    
    , Aplodinotus grunniens

Smelt

Order: Salmoniformes, Family: Osmeridae 

• Non native, exotic species
  • Rainbow Smelt
    Rainbow smelt
    The rainbow smelt, Osmerus mordax, is an anadromous species of fish of the family Osmeridae. The distribution of Osmerus mordax is circumpolar. The rainbow smelt was introduced to the Great Lakes, and from there has made its way to various other places. Walleye, trout, and other larger fish prey on...
    
    , Osmerus mordax

Gars

Order: Lepisosteiformes. Family: Lepisosteidae 

• Native species
  • Shortnose Gar
    Shortnose gar
    The Shortnose Gar is a primitive freshwater fish of the family Lepisosteidae.Shortnose gar have a prehistoric looking appearance. Like many other "lie-in-wait" predators, gars have an elongated, torpedo-like body with an elongated head containing one row of sharp, conical teeth...
    
    , Lepisosteus platostomus

Mooneyes

Order: Hiodontiformes

Hiodontiformes

Hiodontiformes is a relatively new order of fish, consisting of the two living species of the mooneye family Hiodontidae and three genera of extinct types....

, Family: Hiodontidae 

• Native species
  • Goldeye
    Goldeye
    The goldeye, Hiodon alosoides, is a species of fish in the mooneye family . It occurs from as far down the Mackenzie River as Aklavik in the north to Mississippi in the south, and from Alberta in the west to Ohio south of the Great Lakes, with an isolated population south of James Bay. It is...
    
    , Hiodon alosoides

Mollies

Order: Cyprinodontiformes

Cyprinodontiformes

The Cyprinodontiformes is an order of ray-finned fish, comprising mostly small, fresh-water fish. Many popular aquarium fish, such as killifish and live-bearers, are included. They are closely related to the Atheriniformes and are occasionally included with them...

, Family: Poeciliidae

Poeciliidae

Poeciliidae is a family of fresh-water fish which are live-bearing aquarium fish . They belong to the order Cyprinodontiformes, tooth-carps, and include well-known aquarium fish such as the guppy, molly, platy, and swordtail...

 

• Non-native, exotic species
  • Green Swordtail
    Green swordtail
    The green swordtail is a species of freshwater fish in family Poeciliidae of order Cyprinodontiformes. A live-bearer, it is closely related to the southern platyfish or "platy" and can crossbreed with it...
    
    , Xiphophorus helleri
  • Sailfin Molly
    Sailfin molly
    The sailfin molly, Poecilia latipinna, is a species of fish, of the genus Poecilia. They inhabit fresh, brackish, and coastal waters from North Carolina to Texas and the Yucatán Peninsula of Mexico.- Taxonomy :...
    
    , Poecilia latipinna
  • Shortfin Molly, Poecilia mexicana
  • Variable Platyfish
    Variable platyfish
    The variatus platy , also known as variable platyfish or variegated platy, is a species of freshwater fish in family Poecilidae of order Cyprinodontiformes. A live-bearer, it is native to southern Tamaulipas and northern Veracruz states in northeastern Mexico...
    
    , Xiphophorus variatus
  • Western Mosquitofish, Gambusia affinis

Killifish

Order: Cyprinodontiformes

Cyprinodontiformes

The Cyprinodontiformes is an order of ray-finned fish, comprising mostly small, fresh-water fish. Many popular aquarium fish, such as killifish and live-bearers, are included. They are closely related to the Atheriniformes and are occasionally included with them...

, Family: Fundulidae

Fundulidae

Fundulidae is the family of topminnows and North American killifishes. The 46 species are native to North America as far south as Yucatan, and to the islands of Bermuda and Cuba, occurring in both freshwater and marine environments....

 

• Non-Native, exotic species
  • Northern Plains Killifish, Fundulus kansae

Minnows

Order: Cypriniformes

Cypriniformes

The Cypriniformes are an order of ray-finned fish, including the carps, minnows, loaches and relatives. This order contains 5-6 families, over 320 genera, and more than 3,250 species, with new species being described every few months or so, and new genera being recognized regularly...

, Family: Cyprinidae 

• Native species
  • Brassy Minnow, Hybognathus hankinsoni
  • Emerald Shiner
    Emerald shiner
    The Emerald Shiner is one of hundreds of small, silvery, slender fish known as shiners. The identifying characteristic of the emerald shiner is the silvery emerald color on its sides...
    
    , Notropis atherinoides
  • Fathead Minnow
    Fathead minnow
    The fathead minnow , is a species of temperate freshwater fish belonging to the Pimephales genus of the cyprinid family. The natural geographic range extends throughout much of North America, from central Canada south along the Rockies to Texas, and east to Virginia and the Northeastern United...
    
    , Pimephales promelas
  • Flathead Chub, Platygobio gracilis
  • Golden Shiner
    Golden shiner
    The golden shiner is a cyprinid fish native to eastern North America. It is the sole member of its genus. Much used as a bait fish, it is probably the most widely pond-cultured fish in the United States.-Description:...
    
    , Notemigonus crysoleucas
  • Longnose Dace
    Longnose dace
    The longnose dace is found in muddy and warm, clear and cold, streams and lakes. The largest longnose dace are about 6 inches long. They are well-adapted for living on the bottom of fast-flowing streams among the stones. Longnose dace eat mostly immature aquatic insects. They are important...
    
    , Rhinichthys cataractae
  • Northern PikeMinnow, Ptychocheilus oregonensis
  • Northern Redbelly Dace
    Northern redbelly dace
    The northern redbelly dace, Chrosomus eos, is a freshwater cyprinid fish, generally found in lakes and small streams in the northeastern United States and eastern Canada. It is one of fouty-four species from the minnow and carp family of Cyprinidae in these areas...
    
    , Phoxinus eos
  • Northern Redbelly X Finescale Dace, Phoxinus eos x phoxinus neogaeus
  • Peamouth, Mylocheilus caurinus
  • Pearl Dace, Margariscus margarita
  • Plains Minnow, Hybognathus placitus
  • Redside Shiner, Richardsonius balteatus
  • Sand Shiner
    Sand Shiner
    The Sand Shiner is a species of ray-finned fish in the Cyprinidae family of order Cypriniformes. The specific epithet Notropis means keeled back and stramineus means of straw, making reference to the fishes overall pale amber body color. N. ludibundus is a senior synonym of N. stramineus, however,...
    
    , Notropis stramineus
  • Sicklefin Chub
    Sicklefin Chub
    The Sicklefin Chub is a species of ray-finned fish in the Cyprinidae family.It is found only in the United States. It is one of the 324 fish species found in Tennessee.-Source:...
    
    , Macrhybopsis meeki
  • Western Silvery Minnow, Hybognathus argyritis
  • Sturgeon Chub
    Sturgeon Chub
    The Sturgeon Chub is a species of ray-finned fish in the Cyprinidae family.It is found only in the United States. It is one of the 324 fish species found in Tennessee.-Source:...
    
    , Macrhybopsis gelida
  • Lake Chub
    Lake chub
    The Lake Chub, Couesius plumbeus, is a freshwater cyprinid fish found in Canada and in parts of the United States. Of all North American minnows, it is the one with the northernmost distribution. Its genus, Couesius The Lake Chub, Couesius plumbeus, is a freshwater cyprinid fish found in Canada and...
    
    , Couesius plumbeus
  • Creek Chub, Semotilus atromaculatus
• Non-native, exotic species
  • Goldfish
    Goldfish
    The goldfish is a freshwater fish in the family Cyprinidae of order Cypriniformes. It was one of the earliest fish to be domesticated, and is one of the most commonly kept aquarium fish....
    
    , Carassius auratus
  • Common Carp
    Common carp
    The Common carp is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia. The wild populations are considered vulnerable to extinction, but the species has also been domesticated and introduced into environments worldwide, and is often considered an invasive...
    
    , Cyprinus carpio
  • Spottail Shiner
    Spottail Shiner
    Spottail Shiner or is a small to medium sized freshwater minnow. Spottail Shiners are members of the phylum Chordata and class Actinopterygii, which are the ray-finned and spiny ray fish. It is a member of the order Cypriniformes and family Cryprinidae, which consist of the carps and minnows...
    
    , Notropis hudsonius
  • Utah Chub
    Utah chub
    The Utah chub is a cyprinid fish native to western North America, where it is abundant in the upper Snake River and throughout the Lake Bonneville basin....
    
    , Gila atraria

Suckers

Order: Cypriniformes

Cypriniformes

The Cypriniformes are an order of ray-finned fish, including the carps, minnows, loaches and relatives. This order contains 5-6 families, over 320 genera, and more than 3,250 species, with new species being described every few months or so, and new genera being recognized regularly...

, Family: Catostomidae

Catostomidae

Catostomidae is the sucker family of the order Cypriniformes. There are 80 species in this family of freshwater fishes. Catostomidae are found in North America, east central China, and eastern Siberia...

 

• Native species
  • Bigmouth Buffalo
    Bigmouth buffalo
    The bigmouth buffalo, Ictiobus cyprinellus, also known as the gourd head, redmouth buffalo, buffalo fish, bernard buffalo, roundhead, or brown buffalo, is a large species of the Catostomidae or "sucker" family....
    
    , Ictiobus cyprinellus
  • Blue Sucker
    Blue sucker
    The blue sucker, Cycleptus elongatus, is a freshwater species of fish in the sucker family. Color is variable, from light steel-gray to almost black. The fish is streamlined, with a pointed head and a subterminal mouth...
    
    , Cycleptus elongatus
  • Largescale Sucker
    Largescale sucker
    The Largescale sucker is a species of sucker found in western North America....
    
    , Catostomus macrocheilus
  • Longnose Sucker
    Longnose sucker
    The longnose sucker, Catostomus catostomus, is a freshwater species of fish inhabiting cold, clear waters in North America from northern USA to the top of the continent. In addition, it is one of two species of sucker to inhabit Asia, specifically the rivers of eastern Siberia...
    
    , Catostomus catostomus
  • Mountain Sucker
    Mountain sucker
    The Mountain Sucker is a sucker found throughout western North America.This is a slender and streamlined sucker, generally olive green to brown above and on the sides, and white to yellowish underneath. There may be a pattern of darker blotches along the sides...
    
    , Catostomus platyrhynchus
  • River CarpSucker, Carpiodes carpio
  • Shorthead Redhorse
    Shorthead redhorse
    -Introduction:The Shorthead Redhorse is a wide-ranging species in North America that needs to be monitored throughout its range. The Shorthead Redhorse is native to central and eastern North America. However, its range has expanded to include areas like the Hudson estuary and Grayson County, Texas...
    
    , Moxostoma macrolepidotum
  • Smallmouth Buffalo, Ictiobus bubalus
  • White Sucker
    White Sucker
    The White Sucker is a bottom-feeding freshwater fish inhabiting North America from Labrador in the north to Georgia and New Mexico in the south. It is a long, round-bodied fish with a dark green, grey, copper, brown, or black back and sides and a light underbelly. When fullgrown, it is between 12...
    
    , Catostomus commersoni

Mudminnows

Order: Esociformes

Esociformes

Esociformes is a small order of ray-finned fish, with two families, the Umbridae and the Esocidae . The pikes of genus Esox give the order its name. There are ten species — five in each family....

, Family: Umbridae

Umbridae

Umbridae are a family of Actinopterygii, ray-finned fish, that inhabit freshwater environments in temperate regions across the northern hemisphere...

 

• Non-native, exotic species
  • Central mudminnow
    Central mudminnow
    The central mudminnow is a small fish in the family Umbridae of the order Esociformes. It is found in central and eastern North America in productive waters...
    
    , Umbra limi

Sculpins

Order: Scorpaeniformes

Scorpaeniformes

Scorpaeniformes is an order of ray-finned fish, but it has also been called the Scleroparei.They are known as "mail-cheeked" fishes due to their distinguishing characteristic, the suborbital stay: a backwards extension of the third circumorbital bone across the cheek to the preoperculum, to which...

, Family: Cottidae

Cottidae

The Cottidae is a family of demersal fish in the order Scorpaeniformes, suborder Cottoidei . There are about 300 species in 70 genera of Cottidae that are mostly marine and found in shallow coastal waters in the northern and arctic regions...

 

• Native species
  • Deepwater Sculpin
    Deepwater sculpin
    The deepwater sculpin is a freshwater sculpin that inhabits the bottoms of cold, deep freshwater lakes of northern North America. Its distribution ranges from the Great Bear Lake of Canada to the Great Lakes...
    
    , Myoxocephalus thompsonii
  • Mottled Sculpin
    Mottled sculpin
    The mottled sculpin, Cottus bairdii, is a freshwater sculpin found widely although unevenly throughout North America.As the name suggests, its coloration is a combination of bars, spots, and speckles randomly distributed. The large pectoral fins are banded...
    
    , Cottus bairdi
  • Slimy Sculpin
    Slimy Sculpin
    The slimy sculpin, Cottus cognatus, is a freshwater species of fish that inhabits cool, rocky streams, rivers and lakes throughout northern North America and eastern Siberia. The slimy sculpin is found in freshwater and sometimes brackish water in areas with rocky or gravel type bottoms...
    
    , Cottus cognatus
  • Spoonhead Sculpin
    Spoonhead Sculpin
    The spoonhead sculpin, Cottus ricei, is a freshwater fish of the Cottidae family that is widely distributed in North America. It is a type of sculpin....
    
    , Cottus ricei
  • Torrent Sculpin, Cottus rhotheus

Sticklebacks

Order: Gasterosteiformes

Gasterosteiformes

Gasterosteiformes is an order of ray-finned fishes that includes the sticklebacks and relatives.In the Gasterosteiformes, the pelvic girdle is never attached to the cleithra directly, and the supramaxillary, orbitosphenoid, and basisphenoid bones are absent. The body is often partly or completely...

, Family: Gasterosteidae 

• Native species
  • Brook Stickleback
    Brook stickleback
    The Brook stickleback is a small freshwater fish that is distributed across the US and Canada. It grows to a length of about 2 inches. It occupies the northern part of the eastern United States, as well as the southern half of Canada...
    
    , Culaea inconstans

Trout-perch

Order: Percopsiformes

Percopsiformes

Percopsiformes is a small order of ray-finned fish, comprising the trout-perch and its allies. It contains just nine species, grouped into three families....

, Family: Percopsidae

Percopsidae

Percopsidae is a family of fish in the order Percopsiformes. Its living members are two North American fresh water species of the genus Percopsis, trout-perch Percopsis omiscomaycus and sand roller Percopsis transmontana .They are small fish with weak fin spines, and an adipose fin similar to...

 

• Native species
  • Trout-perch, Percopsis omiscomaycus

See also

• Amphibians and Reptiles of Montana
• Birds of Montana
• Clams and Mussels of Montana
• Fishes of Yellowstone National Park
  Fishes of Yellowstone National Park
  Yellowstone National Park is home to 13 native Fish species and six introduced or non-native species. Angling for trout has been a pastime in the park since its creation and trout species dominate the fish inhabiting the park. When the park was created in 1872, 40% of the park's waters were barren...