Allfishes
Alaska blackfish
Dallia pectoralis
The Alaska blackfish can be identified by its short, flattened snout, the posterior position of the …
Freshwater
Freshwater fish spend part or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%.
Showing 1–24 of 40
Astyanax jordani
Anoptichthys jordani
Astyanax jordani is very close to A. mexicanus and their taxonomic affiliation is controversial. Some consider …
Atlantic stingray
Dasyatis sabina
The Atlantic stingray has an elongated, pointed snout. Spiracles are located behind the eyes. The ventral …
Brazhnikov's catfish
Tachysurus brashnikowi
Brazhnikov's catfish belongs to the family Bagridae (bagrid catfishes). The species is a demersal fish, meaning …
Brook lamprey
Lampetra planeri
The brook lamprey has an elongated, eel-like (anguilliform) body that is completely scaleless. It is the …
Campylomormyrus curvirostris
Campylomormyrus curvirostris, gnathonemus curvirostris, campylomormyrus rhynchophorus.
The snout of Campylomormyrus curvirostris is highly elongated and curved downward like a trunk, with a …
Campylomormyrus numenius
Campylomormyrus numenius
Campylomormyrus numenius possesses a highly elongated, ventrally curved rostrum, analogous to an elephant's trunk, terminating in …
Carp, Grass
Ctenopharyngodon idella
The grass carp has an elongated and rather compressed body, a broad and blunt head, a …
Dace
Rhinichthys cataractae
Dace have a slender body. Most species have terminal antennae. The pearl dace (Semotilus margarita margarita) …
Dace, Blacknose
Rhinichthys atratulus
The blacknose dace has a long, slender body with a slightly protruding snout. The whiskers, characteristic …
Dace, Longnose
Rhinichthys cataractae
The longnose dace is a distinctive minnow with a long, fleshy snout, a subterranean mouth and …
Darters: Johnny Darter
Etheostoma nigrum
There are three known genera of darters: Percina, which contains about 40 species: Etheostoma, which contains …
Drum, Freshwater
Aplodinotus grunniens
The body is deep, with a crooked back, a blunt snout and a subterranean mouth adapted …
Golden pencilfish
Nannostomus beckfordi
The genus name Nannostomus comes from the Latin nannus ("small") and the Greek stoma ("mouth"), referring …
Gudgeon
Gobio gobio
The Latin genus name Gobio comes from the word "goby," referring to its stocky shape and …
Hogsucker, Northern
Hypentelium nigricans
The Northern Hogsucker gets its name from its pig-like appearance, especially its head. It has a …
Mullet
Mugil cephalus, Mugil curema
The striped mullet (Mugil cephalus) has a bluish-gray or green coloration along the back, turning to …
One-lined pencilfish
Nannostomus unifasciatus
The name unifasciatus comes from the Latin words uni ("one") and fasciatus ("banded"), meaning "one-banded." The …
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 …
Scaly osman
Diptychus maculatus
The body of the Scaly osman is fusiform (spindle-shaped), elongate, and shallow. The mouth is inferior …
Spined loach
Cobitis taenia
The spined loach has a long, slender body, slightly compressed laterally, which helps it move easily …
Stonecat
Noturus flavus
Stonecats have an olive, yellowish, or slate-colored upper half of the body and are the only …
Sturgeon, Lake
Acipenser fulvescens
Lake sturgeon are somewhat torpedo-shaped, and the upper lobe of the caudal fin is longer than …