Allfishes
Argentine pearlfish
Austrolebias bellottii
The Argentine pearlfish has a laterally compressed, fusiform (spindle-shaped) body with a rounded profile. Males are …
Freshwater
Freshwater fish spend part or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%.
Showing 1–18 of 18
Black Molly
Poecilia sphenops
The Black Molly has an elongated body. Females tend to be more rounded in appearance. The …
Chosa herring
Clupea pallasi suworowi
The abdominal keel scales of the Chosa herring are developed only behind the base of the …
Constancia’s seasonal killifish
Cynolebias constanciae
The body of Constancia's seasonal killifish (Cynolebias constanciae) is elongate and slightly laterally compressed.
Eastern mosquitofish
Gambusia holbrooki
The body of the Eastern mosquitofish is moderately elongated, not tall, and laterally compressed. It is …
Finescaled four-eyed fish
Anableps microlepis
Anableps: Greek, ana = up + Greek, blepo, blepsis, -eos = glance, sight.The elongated cylindrical body …
Green swordtail
Xiphophorus hellerii
Green swordtails have elongated, narrow bodies that are flattened on the sides. They also have large …
Guppy
Poecilia reticulata
Guppies exhibit pronounced sexual dimorphism, with males and females differing in size, shape, and colouration. Males …
Herring
Clupea
Body compressed from the sides, with jagged edge of abdomen. Scales moderate or large, rarely small. …
Herring, Atlantic
Clupea harengus
The body is not high (its height is about 1/5 of body length). Head is comparatively …
Least killifish
Heterandria formosa
Least killifish differ little in body shape from their closest relatives, the Poecilia. They have an …
Mosquitofish
Gambusia affinis affinis
The male anal fin is modified and is an intermittent organ for introducing sperm into the …
Porous seasonal killifish
Cynolebias porosus
The Porous seasonal killifish has a fusiform (spindle-shaped) body that is laterally compressed. The snout is …
Shad, Alabama
Alosa alabamae
It has a large terminal mouth with upper and lower jaws of almost equal length. The …
Shad, American
Alosa sapidissima
The laterally compressed, rather deep body of the American shad is silvery white, with some amount …
Shad, Gizzard
Dorosoma cepedianum
The gizzard shad is one of two freshwater members of the herring family that has a …
Shad, Hickory
Alosa mediocris
Gray-green on the back and transitioning to silver on the sides, the hickory shad has transparent …
Shad, Threadfin
Dorosoma petenense
The threadfin shad has a silvery color and a deeply compressed body, most easily recognized by …