[3] S. carinatus is found in the states of Alabama, Arkansas, Louisiana, Mississippi, Oklahoma, Florida, and Texas.

The carapace has a distinct, sharp keel down the center of its length, giving the species its common name.

carinatus is almost entirely aquatic, spending most of its time in shallow, heavily vegetated, slow-moving creeks, ponds, streams, and swamps.

[5] The diet of S. carinatus consists primarily of aquatic invertebrates, including freshwater clams, crayfish, snails, and various insects.

[9] Its relatively small size, hardiness and ease of care makes it a more attractive choice as a pet turtle for many keepers, than the more commonly available red-eared slider (Trachemys scripta elegans).