Definition of "crestfish"

Family Lophotidae — Crestfishes

1956, Bulletin of the Florida State Museum: Biological sciences

Nothing is known about crestfish ages, spawning habits, or migrations, but a larval specimen less than an inch long was cast ashore at La jolla in December, 1905.

1968, John E. Fitch, Deep-water Teleostean Fishes of California‎, page 87

This mode of swimming is usually used for slow swimming among fishes, e.g. scabbard and crestfish (Lindsey, 1979).

2014, Maki K. Habib, Handbook of Research on Advancements in Robotics and Mechatronics‎