ABBREVIATE HETEROCERCAL
type of caudal fin in which the vertebral column extends only a short way into the upper lobe of the fin (which is longer than the lower lobe); a heterocercal caudal fin approaching the homocercal type, e.g. Lepisosteidae, Amiidae
Смотреть больше слов в «Dictionary of ichthyology»
ABBREVIATION →← ABAXIAL