Freshwater

Amu-Darya trout

Salmo oxianus

The Amu-Darya trout, in its external appearance, is typical of salmonid fish but has its own …

Arapaima

Arapaima gigas

The body of the arapaima is elongated and compressed from the sides. It is covered with …

Arctic lamprey

Lethenteron camtschaticum

The Arctic lamprey is characterized by its eel-like body shape, the presence of two large teeth …

Asian stinging catfish

Heteropneustes fossilis

The Asian stinging catfish has an elongated, slightly compressed body that writhes like a snake when …

Bowfin

Amia calva

The ancient fish, described by some as looking more like a snake than a fish, has …

Bullhead, Black

Ameiurus melas

The "black" bullhead can actually be yellowish green, dark green, olive, brown, or black on the …

Bullhead, Brown

Ameiurus nebulosus

The head of the brown bullhead is large for its round and slender body, and the …

Bullhead, Yellow

Ameiurus natalis

A moderately slender fish, it has skin without scales. The coloration varies from yellowish-olive to brown …

Burbot

Lota lota

The head is flattened, broad, with an unpaired antenna on the chin and short antennae at …

Catfish, Blue

Ictalurus furcatus

Blue catfish are usually bluish-grey or slate-blue, without spots or other markings, although they can be …

Catfish, Channel

Ictalurus punctatus

The body is bare, elongated, slender and compressed at the rear. The caudal fin is long …

Catfish, Flathead

Pylodictus olivaris

The flathead catfish has a distinctive appearance and is not easily confused with any other species. …

Catfish, White

Ameiurus catus

White catfish resemble a cross between a channel cat and a bullhead, with a slightly forked …

Catfish: Channel Catfish

Ictalurus punctatus

Most catfish have no scales, but some are covered with heavy scales. They are characterised by …

Chubsucker: Lake Chubsucker

Erimyzon oblongus

Chubsuckers are characterised by their small, protruding, sucker-like mouths and thick, fleshy lips. Creek, lake and …

Eastern bottle-nosed mormyrid

Mormyrus longirostris

The eastern bottle-nosed mormyrid has such a distinctive appearance that it cannot be confused with any …

Eel, American

Anguilla rostrata

The body is elongated and snake-like, with a pointed head and many teeth. It is covered …

Frankfish

Gymnarchus niloticus

The Frankfish has a long and slender body. It possesses four small bony gills on both …

Green terror

Andinoacara rivulatus, syn. Aequidens rivulatus.

The Green Terror is a stocky fish with a prominent forehead. In adult males, a pronounced …

Longcomb sawfish

Pristis zijsron

The longcomb sawfish has an elongated, flat rostrum with tooth-like projections on either side. It is …

New Zealand longfin eel

Anguilla dieffenbachii

The New Zealand longfin eel possesses a long, slender body with a large mouth filled with …

Pallid sturgeon

Scaphirhynchus albus

The pallid sturgeon has a distinctive, prehistoric appearance. Its body is elongated, nearly cylindrical, with a …

Siberian sturgeon

Huso baerii

The Siberian sturgeon has a spindle-shaped body with several longitudinal rows of bumps. Its short, triangular …

Spotted lungfish

Protopterus dolloi

The spotted lungfish has a body very similar to that of an eel. It is elongated …