Definition of crestfish in English:

crestfish

Pronunciation /ˈkrestfiSH/ /ˈkrɛstfɪʃ/

nouncrestfish, crestfishes

  • A very elongated silvery marine fish with a crimson dorsal fin running the full length of its body and a forehead that projects forward into a long filament.

    Lophotus lacepedei, family Lophotidae