Saltwater fishes

• Molidae
  Molidae
  Molidae is the family of the molas or ocean sunfishes, unique fish whose bodies come to an end just behind the dorsal and anal fins, giving them a "half-a-fish" appearance...
  
  , family of Ocean Sunfishes
• Opah
  Opah
  Opah are large, colorful, deep-bodied pelagic Lampriform fish comprising the small family Lampridae . There are only two living species in a single genus: Lampris...
  
  , family Lampridae; two species

Freshwater fishes

• Pygmy sunfish
  Pygmy sunfish
  Elassoma is a genus of freshwater fish, the only member of family Elassomatidae and suborder Elassomatoidei of order Perciformes. The type species is E. zonatum, the banded pygmy sunfish. The Elassomatidae are known collectively as pygmy sunfishes, but are not true sunfishes, which are members...
  
  , six members of the genus Elassoma
• 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...
  
  , a perciform family of about 27 species
  • Lepomis
    Lepomis
    Lepomis is a genus of freshwater fish in the sunfish family of order Perciformes. The most recognizable species of the sixteen in this genus is the Bluegill....
    
    , a genus within Centrarchidae containing the common sunfishes

Nautical

• Sunfish (sailboat), an International Sunfish Class sailing dinghy
• Royal Navy:
  • Sunfish class destroyer
    Sunfish class destroyer
    Three Sunfish-class destroyers served with the Royal Navy. , and were all built by the Hebburn-on-Tyne shipyard of Hawthorn Leslie. Ordered under the 1893-94 Programme, the contract was placed on 7 February 1894. All three "turtle-back" destroyers were laid down in 1894, launched in 1895 and...
    
    , a type of destroyer
  • HMS Sunfish (1895), the first Sunfish destroyer, launched in 1895
  • HMS Sunfish (81S)
    HMS Sunfish (81S)
    HMS Sunfish was a Royal Navy S-class submarine which was launched on 30 September 1936 and fought in the Second World War. Sunfish is one of 12 boats named in the song Twelve Little S-Boats....
    
    , an S-Class submarine, launched in 1936
• United States Navy:
  • USS Sunfish (SS-281)
    USS Sunfish (SS-281)
    USS Sunfish , a Gato-class submarine, was the first ship of the United States Navy to be named for the ocean sunfish, Mola Mola, a plectognath marine fish, having a deep body truncated behind, and high dorsal and anal fins....
    
    , a Gato-class submarine, commissioned in 1942
  • USS Sunfish (SSN-649)
    USS Sunfish (SSN-649)
    USS Sunfish , a Sturgeon-class attack submarine, was the second ship of the United States Navy to be named for the ocean sunfish , a marine species having a deep body truncated behind, and high dorsal and anal fins....
    
    , a Sturgeon-class submarine, commissioned in 1969

Place names

• Sunfish Lake (Ontario)
  Sunfish Lake (Ontario)
  Sunfish Lake is a small, 25 hectare meromictic lake located north-west of Waterloo, Ontario in the village of St. Agatha in northern Wilmot Township, and is the source of Laurel Creek. It is one of a few meromictic lakes in Ontario, that is, its deep bottom waters are totally devoid of oxygen...
  
  

• Sunfish, Kentucky
  Sunfish, Kentucky
  Sunfish is an unincorporated community located in the Northwest corner of Edmonson County, Kentucky, United States, near the county lines of Grayson County...
  
  
• Sunfish Township, Pike County, Ohio
  Sunfish Township, Pike County, Ohio
  Sunfish Township is one of the fourteen townships of Pike County, Ohio, United States. The 2000 census found 1,317 people in the township.-Geography:Located in the southwestern part of the county, it borders the following townships:*Benton Township - north...
  
  
• Sunfish Lake, Minnesota
  Sunfish Lake, Minnesota
  Sunfish Lake is a city in Dakota County, Minnesota, United States. The population was 521 at the 2010 census. First incorporated as a village in 1958, the city's goal has been to maintain a rural atmosphere, with large lot size and as little disturbance of the natural environment as...
  
  
• Sunfish Pond
  Sunfish Pond
  Sunfish Pond is a glacial lake surrounded by a hardwood forest located on the Kittatinny Ridge within Worthington State Forest, adjacent to the Delaware Water Gap National Recreation Area in Warren County, New Jersey. The Appalachian Trail runs alongside the western and northern edges of the...
  
  , along the Appalachian Trail in New Jersey