Also found in: Thesaurus.
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|Noun||1.||A. testudineus - a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land|
fish - any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills; "the shark is a large fish"; "in the living room there was a tank of colorful fish"