filefish

/ˌfaɪlˈfɪʃ/

Definitions of filefish

1. noun

   narrow flattened warm-water fishes with leathery skin and a long file-like dorsal spine
   types:

   leatherfish, leatherjacket

   any of several brightly colored tropical filefishes

   type of:

   plectognath, plectognath fish

   tropical marine fishes having the teeth fused into a beak and thick skin covered with bony plates or spines