Freshwater

Drum, Red

Sciaenops ocellatus

The red drum is similar in appearance to the black drum, although its maximum size is …

Electric eel

Electrophorus electricus

The electric eel has bare skin, no scales, and a very elongated body that is rounded …

European grayling

Thymallus thymallus

The distinctive features of the European grayling are its spindle-shaped body, its upper jaw that reaches …

European perch

Perca fluviatilis

The European perch has a laterally compressed body covered with dense, small ctenoid scales. It has …

Fallfish

Semotilus corporalis

The body of the fallfish is slender with a blunt, pointed head. There is a single …

Ganges shark

Glyphis gangeticus

The Ganges shark is stocky, with two spineless dorsal fins and an anal fin. The snout …

Gar, Alligator

Lepisosteus spatula

The body of the alligator gar is long and cylindrical, covered with heavy ganoid (rhomboid) scales. …

Gar, Florida

Lepisosteus platyrhincus

The body of the Florida Gar is cigar-shaped with a broad, toothed snout. The single dorsal …

Gar, Longnose

Lepisosteus osseus

The body of the Long-billed Gar is long and slender. It has an elongated narrow bill …

Gar, Shortnose

Lepisosteus platostomus

The body is long and cylindrical, covered with ganoid (rhomboid) scales. The upper jaw has one …

Gar, Spotted

Lepisosteus oculatus

The body of the spotted gar is long and cylindrical, covered with hard ganoid (rhomboid) scales. …

Golden pencilfish

Nannostomus beckfordi

The genus name Nannostomus comes from the Latin nannus ("small") and the Greek stoma ("mouth"), referring …

Goldeye

Hiodon alosoides

The goldeye is a small fish with a compressed body that is deep in proportion to …

Goldfish

Carassius auratus

The body of the goldfish is short and tall with a slightly angular shape. It is …

Goliath tigerfish

Hydrocynus goliath

The Goliath tigerfish has a body shape similar to a tuna's. Due to their predatory nature, …

Grass pickerel, Redfin pickerel

Esox americanus vermiculatus, Esox americanus americanus

Thin and cylindrical, grass and redfin pickerel look very similar to chain pickerel, with the same …

Grayling, Arctic

Thymallus arcticus

Graceful lines, large fins and spectacular coloration make the grayling a striking fish. The most striking …

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 …

Ide

Leuciscus idus

The body of the ide is thick. It is distinguished by the following features: a shortened …

Inconnu

Stenodus leucichthys

The general shape of the inconnu's body is very similar to that of the charr or …

Ladyfish

Elops saurus

The ladyfish has an elongated, slender, silvery body with a blue-green back and fine scales. It …