s/n2467133

Information
has gloss	(noun) a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks heterocercal fin
lexicalization	eng: heterocercal fin
subclass of	(noun) the tail of fishes and some other aquatic vertebrates tail fin, caudal fin

Links
opposite	(noun) symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes homocercal fin