ho·mo·cer·cal (hōmə-sûrkəl, hŏmə-)
adj. Relating to, designating, or characterized by a tail fin having two symmetrical lobes extending from the end of the vertebral column, as in most bony fishes.

[TahlilGaran] American Dictionary ▲

homocercal
[homo- + Greek kerkos, tail + -al¹.]

[TahlilGaran] American Dictionary ▲