any fish that breeds its young in the mouth. Examples include certain catfishes and cardinal fishes. The male of the sea catfish Galeichthys felis ... [2 related articles] Found on http://www.britannica.com/eb/a-z/m/130
any of several fishes of the genera Tilapia and Haplochromis, that hatch and care for their young in the mouth. · any of several fishes in various genera of the Anabantidae, Apogonidae, Cichlidae, and other teleost fish families that hold their eggs or young in their mouths. Found on https://www.infoplease.com/dictionary/mouthbreeder