anal fin
noun
the median, unpaired fin on the ventral margin between the anus and the caudal fin in fishes.
Words Nearby anal fin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use anal fin in a sentence
anal fin resembling the second dorsal, greyish, with the margin dull-purple.
Zoological Illustrations, Volume I | William Swainson
British Dictionary definitions for anal fin
anal fin
noun
a median ventral unpaired fin, situated between the anus and the tail fin in fishes, that helps to maintain stable equilibrium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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