The Vermilion darter (Etheostoma chermocki) is a severely endangered species of fish native to Turkey Creek in Jefferson County. Its habitat is direly threatened by development, especially construction runoff. The 2.6 inch long brightly-colored fish spawns from mid-spring to mid-summer and inhabits mainly swift gravel-bottomed chutes with pondweed and watercress stands.
In 2010 the U. S. Fish and Wildlife service designated 13 additional miles of Turkey Creek as "critical habitat" for the Vermilion darter.
- Boschung Jr, Herber T. and Richard L. Mayden. (2004) Fishes of Alabama. Washington D.C.: Smithsonian Press
- Spencer, Thomas (December 7, 2010) "Habitat for endangered vermilion darter expanded in Jefferson County's Turkey Creek." Birmingham News