Freshwater

Hogsucker, Northern

Hypentelium nigricans

The Northern Hogsucker gets its name from its pig-like appearance, especially its head. It has a …

Honey sucker

Gyrinocheilus aymonieri

The scientific name was given in honour of the French linguist and explorer Étienne Aymonier (1844-1929).The …

Humpback whitefish

Coregonus pidschian

The body of the humpback whitefish becomes more pronounced with age, growing taller. A well-defined hump …

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 …

Lamprey: Sea Lamprey

Petromyzon marinus

Fish without jaws are fish-like vertebrates, eel-like in shape, with a cartilaginous or fibrous skeleton in …

Least cisco

Coregonus sardinella

The body of the Least Cisco is elongated, somewhat compressed at the sides, with the greatest …

Least killifish

Heterandria formosa

Least killifish differ little in body shape from their closest relatives, the Poecilia. They have an …

Longcomb sawfish

Pristis zijsron

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

Madtom, Brown

Noturus phaeus

Brown madtom has a dull coloration. The upper part of the body has a chocolate brown …

Madtoms: Black Madtom

Noturus funebris

The madtom is recognized by its unique fleshy fin. In non-madtom catfish, the fat fin protrudes …

Malabar danio

Devario malabaricus

The Malabar danio has a fusiform (spindle-shaped) body and is a larger, more robust relative of …

Malapterurus electricus

Malapterurus electricus

Malapterurus electricus has a characteristic appearance that distinguishes it from most other catfish. It has an …

Mango tilapia

Sarotherodon galilaeus

The mouth is small, with the lower jaw length being less than 1/3 of the total …

Mbu pufferfish

Tetraodon mbu

The Mbu pufferfish is the largest representative of the pufferfish family in the world. It is …

Minnow, Fathead

Pimephales promelas

The fathead minnow has a puny, deep, compressed body with a short, flattened head. The snout …

Minnow: Golden Shiner

Notemigonus crysoleucas

Minnows are characterized by a single dorsal fin, pelvic fins, soft fin rays, cycloid scales, and …

Mooneye

Hiodon tergisus

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

Mosquitofish

Gambusia affinis affinis

The male anal fin is modified and is an intermittent organ for introducing sperm into the …

Mozambique Tilapia

Oreochromis mossambicus

The best known member of the tilapia group is the Mozambique tilapia (Oreochromis mossambicus), which is …

Mullet

Mugil cephalus, Mugil curema

The striped mullet (Mugil cephalus) has a bluish-gray or green coloration along the back, turning to …

Muskellunge

Esox masquinongy

The muskellunge has an arrow-shaped body, long and smooth. The single dorsal fin with soft rays …

Muskellunge, Tiger

Esox masquinongy x Esox lucius

Tiger muskellunge was thought to be a separate species until scientists were able to cross northern …