Banded Water Snake (young)

Adults average from 24-42 inches (61-106.7 cm). The record is 60 inches (152.4 cm). Stout bodied snake with black, brown, or red crossbands (often bordered with black) across back. Crossbands may be obscured as snake darkens with age. Background color may be gray, yellow, tan, or reddish. Belly is light with squarish spots. Scales are keeled and there are 21-25 dorsal scale rows at midbody. The pupil is round. A dark stripe extends from the eye to the angle of the jaw. Juveniles have very clear crossbands (usually black) on pale background.
https://www.flmnh.ufl.edu/herpetology/fl-snakes/list/nerodia-fasciata-f…