het·ero·cer·cal adjective \-ˈsər-kəl\
of a fish tail fin : having the upper lobe larger than the lower with the vertebral column extending into the upper lobe
: having or relating to a heterocercal tail fin
First Known Use of HETEROCERCAL
Learn More About HETEROCERCAL
Seen & Heard
What made you want to look up heterocercal? Please tell us where you read or heard it (including the quote, if possible).