Fundulus stellifer (Southern Studfish) was studied using 12 monthly collections from Moore's Creek near Waleska, GA. Female specimens ranged from 24.72 mm to 94.29 mm SL and up to 15.90 g total weight. Male specimens ranged from 27.81 mm to 96.07 mm SL and up to 18.60 g total weight. Increases in size were greatest in spring and summer. Maximum age appears to be just over 2 years for both sexes, as the oldest specimens collected were estimated at 28 months of age. Spawning likely occurred between late April and early June. Sexual maturity was reached in the second full spawning season for both sexes, with females having a maximum ova diameter of 2.75 mm. The primary diet of F. stellifer consisted of Chironomidae, Branchiopoda, and unidentified insect parts, with other food items seasonally. The amount of food consumed is greatest in the months preceding and during spawning and lowest during fall and early winter.