any of several brightly colored labyrinth fishes of the genus Betta, found in Southeast Asia.
Compare Siamese fighting fish.
Also called betta.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for fighting fish
any of various labyrinth fishes of the genus Betta, esp the Siamese fighting fish
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