Cichlid Room Companion

TERME: Description du gloassaire des termes.

Contexte: Ichtyologie

fin formula

Count of the spines and rays of fin, usually provided with in a scientific description of a fish species; the number of spines is shown in Roman numerals whereas the number of rays in Arabic numerals, preceded by abbreviation of a fin, e.g. D, XIV+10 for dorsal fin with fourteen spines and ten rays


Coad, Brian & D.E. McAllister. 2007. "Dictionary of Ichtyology". Brian W. Coad. Retrieved on June 21, 2014, from: (crc06223)