1) Cowfish 2) Trunkfish 1) Fish 2) Plectognath 3) Plectognath fish 4) Trunkfish 
• (n.) The trunkfish.
any of a small group of shallow-water marine fishes of the family Ostraciontidae (or Ostraciidae), distinguished by a hard, boxlike, protective ... [1 related articles]
Box'fish` noun (Zoology) The trunkfish. 
[n] - any of numerous small tropical fishes having body and head encased in bony plates
trunkfish noun any of numerous small tropical fishes having body and head encased in bony plates
Any fish of the family Ostraciodontidae, with scales that are hexagonal bony plates fused to form a box covering the body, only the mouth and fins being free of the armour. Boxfishes swim slowly. The cowfish, genus Lactophrys, with two `horns` above the eyes, is a member of this group
trunkfish.