Freshwater

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, Coho

Oncorhynchus kisutch

Head thick, forehead broad. The tail stem is high. In the sea and when entering rivers, …

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, 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 …

Shiner, Common

Luxilus cornutus

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

Shiner, Emerald

Notropis atherinoides

The Emerald Shiner is a slender, elongated fish with a pale silvery slate body that is …

Shiner, Golden

Notemigonus crysoleucas

The golden shiner has a deep, compressed body that is usually a golden yellow or brassy …

Shiner, Striped

Luxilus chrysocephalus

The striped shiner is a silvery, laterally compressed minnow with large eyes and a terminal mouth. …

Siamese fighting fish

Betta splendens

The body of the Siamese fighting fish is oval, flattened at the sides and elongated in …

Siberian sturgeon

Huso baerii

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

Silver carp

Hypophthalmichthys molitrix

The body of the silver carp is quite deep, moderately elongated, and covered with small, easily …

Slender piranha

Serrasalmus elongatus

The most important feature of the slender piranha, which is reflected in its name, is its …