As nouns the difference between heterocerc and heterocercy
is that heterocerc is any fish having a tail with unequal lobes while heterocercy is (anatomy) unequal development of the tail lobes of fishes; the possession of a heterocercal tail.
heterocerc
English
Noun
(
en noun)
Any fish having a tail with unequal lobes
Derived terms
*heterocercal
heterocercy
English
Noun
(
-)
(anatomy) unequal development of the tail lobes of fishes; the possession of a heterocercal tail.
(
Webster 1913)