Definition of kelpfish
noun (plural same or kelpfishes)
- any of a number of fish that live among kelp or other marine algae, in particular:
- a small fish with the dorsal fin running the length of the body, of the Pacific coast of North America (Gibbonsia and other genera, family Clinidae). an Australian fish which lives among seagrass and algae (family Chironemidae: several genera).