Definition
The term 'ventral fin' can be somewhat ambiguous because 'pelvic fin' and 'anal fin' are both located on the ventral (or lower) side of a fish. Typically, when people say 'ventral fin', they may be referring to the anal fin, which is located near the anus. The pelvic fins are also on the ventral side, near the pelvic region. Understand that ventral simply refers to the lower surface. Consider it in contrast with the dorsal or back surface. ⬇️