Mobile River Drainage

Speckled Worm Eel (Myrophis punctatus)

The Speckled Worm Eel is found along the Atlantic and Gulf slope from North Carolina to Brazil. They are found in shallow brackish water of tidal creeks and bays. As their common name suggests, Speckled Worm Eels have speckles on their snake-like body. They also have long dorsal and anal fins.

Warrior Bass (Micropterus warriorensis)

As its common name suggests, the Warrior Bass has a patchy distribution in the Black Warrior River system above the Fall Line in west-central Alabama. The Warrior Bass is found in small upland streams with in-stream cover. This species was recently described out of the Micropterus coosae (Redeye Bass) species complex. As with other members of this complex, Warrior Bass have dusky bars or blotches along their side and a red eye.

Pirate Perch (Aphredoderus sayanus)

Pirate Perch are distributed in Coastal Plain habitats from Texas to New York, including low-lying Mississippi River and Great Lakes drainages through the Midwest. They are most closely associated with backwater habitats with vegetation, including slow streams, oxbows, and swamps. The most unusual character of this species is the positioning of the anus directly behind the gills on the underside of the throat in adults, which migrates during development from a position just before the anal fin in juveniles.

Least Killifish (Heterandria formosa)

Least Killifish are distributed in coastal drainages from North Carolina to Texas. They can be found in slow-flowing fresh or brackish waters with heavy vegetation. Like other Livebearers, males have a modified anal fin (gonopodium) that is used for internal fertilization. As their common name suggests, Least Killifish are one of the smallest fish in the Southeast, reaching no more than 1.5 inches.

Holiday Darter (Etheostoma brevirostrum)

The Holiday Darter is found in a single creek system in the upper Coosa River System in east-central Alabama. This species is part of a species complex containing unrecognized diversity. The Holiday Darter gets its name from the bright red and green colors found in breeding males. Like other Snubnose Darters, they have a blunt snout.

American Eel (Anguilla rostrata)

The American Eel is found across much of eastern North America from Newfoundland to Texas and south to South America. While they live in streams and rivers for most of their lives, they migrate as adults into the Atlantic Ocean where they spawn and die. Larvae are moved by ocean currents back to shoreline habitats where they migrate back up into rivers. American Eels have a snake-like body with a long dorsal fin and can be distinguished from Lampreys by their jaws.

Southern Sand Darter (Ammocrypta meridiana)

The Southern Sand Darter is restricted to Coastal Plain rivers and larger streams in the Mobile Basin in Mississippi and Alabama. All Sand Darters are translucent, so they blend in with the sand substrate they live upon. The Southern Sand Darter lives in the same habitat as the Naked Sand Darter (A. beanii), but they are fairly easy to tell apart. The body of the Southern Sand Darter is completely covered in scales, whereas the Naked Sand Darter lacks body scales except along the lateral line and on the caudal peduncle (region just before the caudal fin).

Highfin Carpsucker (Carpiodes velifer)

The Highfin Carpsucker is widespread in the Mississippi River Drainage as well as southeastern Gulf and Atlantic Slope drainages. They live in many different habitats, though predominately large rivers. As their common name suggests, the Highfin Carpsucker has a long and highly curved dorsal fin which is adapted for life in large rivers.

Quillback (Carpiodes cyprinus)

The Quillback is widespread from Florida to western Canada, including the Mobile, Tennessee, and Cumberland river drainages. They live in many different habitats, though predominately large rivers. As their common name suggests, the Quillback has a long and highly curved dorsal fin which is adapted for life in large rivers.

Largescale Stoneroller (Campostoma oligolepis)

The Largescale Stoneroller is widespread from Alabama to Wisconsin. They live in many different habitats of small creeks to medium rivers. They have a ridge made of cartilage on their lower jaw used to scrape algae off of rocks. Breeding males have a pattern of tubercles, horny projections, on their head and body, which are used during courtship.