The Stippled studfish (Fundulus bifax) is a small freshwater fish which is endemic to the Tallapoosa River system in Georgia and Alabama, USA; and Sofkahatchee Creek (lower Coosa River system) in Alabama. It belongs to the genus Fundulus in the Fundulidae family of killifish and topminnows.
- Froese, Rainer and Pauly, Daniel, eds. (2010). "Fundulus bifax" in FishBase. January 2010 version.
- "Stippled Studfish". Fishes of Alabama and the Mobile Basin. Outdoor Alabama. Retrieved 14 February 2010.
- Cashner, R.C., J.S. Rogers and J.M. Grady 1988 Fundulus bifax, a new species of the subgenus Xenisma from the Tallapoosa and Coosa river systems of Alabama and Georgia. Copeia (3):674-683.