Freshwater

Pickerel, Chain

Esox niger

With its long, slender body, chain pickerel resembles northern pike and muskellunge, especially when young. It …

Pike, Northern

Esox lucius

The northern pike has an elongated body and head. The snout is broad and flat, resembling …

Piraya

Pygocentrus piraya

The piraya has a laterally compressed, roughly circular profile typical of piranhas. A distinctive feature is …

Porous seasonal killifish

Cynolebias porosus

The Porous seasonal killifish has a fusiform (spindle-shaped) body that is laterally compressed. The snout is …

Predatory carp

Chanodichthys erythropterus

The predatory carp has a body structure typical of an active pelagic predator — streamlined, elongated, …

Pyrrhulina filamentosa

Pyrrhulina filamentosa

Pyrrhulina filamentosa has an elongated body with a large caudal fin, the upper lobe of which …

Red-bellied piranha

Pygocentrus nattereri

The red-bellied piranha has a short, deep body shape. Its cross-section is compressed.All piranhas have large …

Redbelly tilapia

Coptodon zillii, tilapia zillii.

Large species with a dense build, narrow head and small strong jaws. The upper profile of …

Rudd

Scardinius erythrophthalmus

The rudd has a cylindrical shape and a deep body. It has a moderately forked tail …

Ruffe

Gymnocephalus cernuus

The ruffe is very similar to the yellow perch in body shape and to the walleye …

Russian bitterling

Acheilognathus asmussii

The Russian bitterling has a very characteristic appearance that distinguishes it from other members of the …

Salmon, Atlantic

Salmo salar

Compared to its body size, the adult Atlantic salmon has a small head. Its body is …

Salmon, Chinook

Oncorhynchus tshawytscha

The body is elongated and somewhat compressed. The head is cone-shaped . It has a bluish …

Salmon, Chum

Oncorhynchus keta

The mouth is large, with the maxillary bone reaching backwards to the vertical of the posterior …

Salmon, Pink

Oncorhynchus gorbuscha

Pink salmon are known as "humpback" because of their distorted, extremely humped appearance, which is caused …

Salmon, Sockeye

Oncorhynchus nerka

The slimmest and most streamlined of the Pacific salmon, which are elongated and somewhat compressed from …

Sander

Sander lucioperca

There are 8-12 short, broad, brown-black horizontal stripes on the sides. The dorsal and caudal fins …

Sauger

Stizostedion canadense

The body of the sauger is slender and almost cylindrical, and the head is long and …

Scaly osman

Diptychus maculatus

The body of the Scaly osman is fusiform (spindle-shaped), elongate, and shallow. The mouth is inferior …

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 …

Shiner, Common

Luxilus cornutus

The common shiner is silvery with a deeply compressed body, a dark dorsal stripe, large eyes, …