noun, plural (especially collectively) white·fish, (especially referring to two or more kinds or species) white·fish·es.
- any of several fishes of the family Coregonidae, inhabiting northern waters of North America and Eurasia, similar to the trout but having a smaller mouth and larger scales.Compare lake whitefish, round whitefish.
- a marine food fish of California, Caulolatilus princeps.
- any of various silvery fishes of the minnow or carp family.
- the beluga, Delphinapterus leucas.