What is "homocercal"

Homocercal \Ho`mo*cer"cal\, a. [Homo- + Gr. ? tail.] (Zo["o]l.) Having the tail nearly or quite symmetrical, the vertebral column terminating near its base; -- opposed to heterocercal.

a. (context ichthyology English) Describing the symmetric tail of a fish that has two lobes extending from the end of the vertebral column.

adj. possessing a symmetrical tail that extends beyond the end of the vertebral column (as in most bony fishes) [ant: heterocercal]