The Dalmatian Barbelgudgeon (Aulopyge huegelii) is a ray-finned fish species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Cyprinidae. It is the only member of the monotypic

Monotypic

In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...

 genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 Aulopyge. The genus name is derived from the Ancient Greek

Ancient Greek

Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...

 aulós (αὐλός, "flute") + pygé (πῦγή, "behind, rump"), and thus means approximately "fluted tail-stem". The specific name honours the Austria

Austria

Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

n naturalist

Naturalist

Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...

 and diplomat Charles von Hügel

Charles von Hügel

Charles von Hügel was an Austrian army officer, diplomat, botanist and explorer, now primarily remembered for his travels in northern India during the 1830s...

. Though the genus was established in 1841, the species was only mentioned but not described at that time; that happened the following year, and in 1843 the frequently-seen mis-spelling huegeli was introduced. Many fish databases use 1843 as the year of description. The IUCN Red List uses 1842 and also has an explanation of the confusion here.

As its common name

Common name

A common name of a taxon or organism is a name in general use within a community; it is often contrasted with the scientific name for the same organism...

 implies, it is a cyprinid

Cyprinid

The family Cyprinidae, from the Ancient Greek kyprînos , consists of the carps, the true minnows, and their relatives . Commonly called the carp family or the minnow family, its members are also known as cyprinids...

 looking somewhat intermediate between a barbel and a gudgeon

Gudgeon (fish)

Gudgeon is a common name for a number of small freshwater fishes of the families Cyprinidae, Eleotridae or Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish, many of which live in rapids and other fast moving water....

. It is, however, only convergent

Convergent evolution

Convergent evolution describes the acquisition of the same biological trait in unrelated lineages.The wing is a classic example of convergent evolution in action. Although their last common ancestor did not have wings, both birds and bats do, and are capable of powered flight. The wings are...

 to the typical gudgeon subfamily (Gobioninae) and in fact among the closest relatives of the typical barbels (Barbus

Barbus

Barbus is a ray-finned fish genus in the family Cyprinidae. The type species of Barbus is the Common Barbel, first described as Cyprinus barbus and now named Barbus barbus...

and the doubtfully distinct Luciobarbus

Luciobarbus

Luciobarbus is a somewhat disputed genus of ray-finned fishes in the family Cyprinidae. Its species are mainly found around the Mediterranean region. Its type species is the Mangar , for which the genus was established by Heckel in 1843...

) – if it is not actually their closest relative.

It is found in Bosnia and Herzegovina

Bosnia and Herzegovina

Bosnia and Herzegovina , sometimes called Bosnia-Herzegovina or simply Bosnia, is a country in Southern Europe, on the Balkan Peninsula. Bordered by Croatia to the north, west and south, Serbia to the east, and Montenegro to the southeast, Bosnia and Herzegovina is almost landlocked, except for the...

 and Croatia

Croatia

Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...

, where it inhabits the karst

KARST

Kilometer-square Area Radio Synthesis Telescope is a Chinese telescope project to which FAST is a forerunner. KARST is a set of large spherical reflectors on karst landforms, which are bowlshaped limestone sinkholes named after the Kras region in Slovenia and Northern Italy. It will consist of...

. It occurs in some creek

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

s in the Livanjsko field, in the Cetina

Cetina

Cetina is a river in southern Croatia. It has a length of and its basin covers an area of . Cetina descends from an altitude of 385 m at its source to the sea level when it flows into the Adriatic Sea. It is the most water-rich river in Dalmatia....

, Krka

Krka (Croatia)

Krka is a river in Croatia's Dalmatia region, famous for its numerous waterfalls. It is long and its basin covers an area of .Possibly the river called Catarbates by the ancient Greeks, it was known to the ancient Romans as Titius, Corcoras, or Korkoras.The river has its source near the border...

 and perhaps Zrmanja Rivers, and it was successfully introduced to Lake Blidin and Busko Blato

Buško Blato

Buško Blato is an accumulation lake located on the south side of Livanjsko Polje and northwest of Duvajnsko Polje in Bosnia and Herzegovina...

. The Dalmatian Barbelgudgeon is mainly nocturnal. It apparently moves into karst cave

Cave

A cave or cavern is a natural underground space large enough for a human to enter. The term applies to natural cavities some part of which is in total darkness. The word cave also includes smaller spaces like rock shelters, sea caves, and grottos.Speleology is the science of exploration and study...

s for spawn

Spawn (biology)

Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm, also called spawning...

ing, which occurs in the month after the water temperature has reached 20 °C (68 °F). The female deposits her eggs

Egg (biology)

An egg is an organic vessel in which an embryo first begins to develop. In most birds, reptiles, insects, molluscs, fish, and monotremes, an egg is the zygote, resulting from fertilization of the ovum, which is expelled from the body and permitted to develop outside the body until the developing...

, which measure about 1.5-2 mm, in rock and gravel

Gravel

Gravel is composed of unconsolidated rock fragments that have a general particle size range and include size classes from granule- to boulder-sized fragments. Gravel can be sub-categorized into granule and cobble...

 fissures with a specialized ovipositor

Ovipositor

The ovipositor is an organ used by some animals for oviposition, i.e., the laying of eggs. It consists of a maximum of three pairs of appendages formed to transmit the egg, to prepare a place for it, and to place it properly...

.

Though its stocks are declining (it was once present in the Zrmanja River but may have gone extinct there), it is still locally numerous. But dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

ming of its home rivers, unsustainable water extraction for agriculture

Agriculture

Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the...

, water pollution

Water pollution

Water pollution is the contamination of water bodies . Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds....

 and perhaps introduced species

Introduced species

An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...

 threaten its long-term survival. It is therefore classified as Endangered by the IUCN.