Freshwater

African jewelfish

Hemichromis bimaculatus

The body of the African jewelfish is elongated and tall, the sides are flat.

Alewife

Alosa pseudoharengus

A small silvery gray with a greenish or bluish tint to its back, the alewife usually …

Amazon leaffish

Monocirrhus polyacanthus

The Amazon leaffish resembles dead yellow-brown leaves in color and body shape. On the tip of …

Amur bitterling

Rhodeus sericeus

The Amur bitterling is a small fish with a deep, laterally compressed body, large scales, and …

Aral Basin snowtrout

Schizothorax intermedius

The Aral Basin snowtrout has a fusiform (spindle-shaped) body. The head is flat on the upper …

Arctic cisco

Coregonus autumnalis

The back of the Arctic cisco is rather high and slightly curved. The pelvis has an …

Arctic grayling

Thymallus arcticus

The Arctic grayling has 58 to 62 vertebrae. They have small mouths with small teeth on …

Asian stinging catfish

Heteropneustes fossilis

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

Asp

Leuciscus aspius

The asp is a true "torpedo-shaped" predator, whose appearance reveals it as a swift hunter.The body …

Balkhash perch

Perca schrenkii

The closest relative is the European perch (Perca fluviatilis), from which the Balkhash perch diverged approximately …

Banded archerfish

Toxotes jaculatrix

The genus name Toxotes is derived from Greek, meaning "archer" or "bow shooter." It refers to …

Banded gourami

Trichogaster fasciata

The banded gourami has an elongated, strongly compressed body with an egg-shaped profile. The mouth is …

Bass, Largemouth

Micropterus salmoides

Compared to other members of the sunfish family, the largemouth bass has an elongated and robust …

Bass, Redeye

Micropterus coosae

Redeye bass is distinguished by a significant amount of red coloration in its eyes. It is …

Bass, Roanoke

Ambloplites cavifrons

Roanoke bass is similar in body shape to rock bass or warmouth. It can be recognized …

Bass, Rock

Ambloplites rupestris

Although in appearance it resembles something between a bluegill and a black bass, the rock bass …

Bass, Smallmouth: Northern Smallmouth Bass, Neosho Smallmouth Bass

Micropterus dolomieui, Micropterus dolomieui dolomieui, Micropterus dolomieui velox

The smallmouth bass has a strong, slightly laterally compressed and elongated body, a protruding lower jaw, …

Bass, Spotted

Micropterus punctulatus

Spotted bass has a moderately compressed, elongated body with similar coloration and markings to those of …

Bass, Striped

Morone saxatilis

A large fish with a large mouth. The striped bass is more streamlined than its close …

Bass, White

Morone chrysops

White bass has a moderately deep and compressed body, which is elevated behind a small head …

Bering cisco

Coregonus laurettae

The Bering cisco has an elongated, compressed body. It is distinguished from the Arctic cisco (Coregonus …

Big Baikal oilfish

Comephorus baikalensis

The body of the Big Baikal oilfish is slender, naked (devoid of scales), with very thin …

Bighead carp

Hypophthalmichthys nobilis

The bighead carp has a deep, laterally compressed body with a characteristically very large head, which …

Black Molly

Poecilia sphenops

The Black Molly has an elongated body. Females tend to be more rounded in appearance. The …