豚魚
Filefish \File"fish`\, n. (Zo["o]l.) Any plectognath fish of the genera {Monacanthus}, {Alutera}, {balistes}, and allied genera; -- so called on account of the roughly granulated skin, which is sometimes used in place of sandpaper.
filefish n : narrow flattened warm-water fishes with leathery skin and a long file-like dorsal spine [also: {filefishes} (pl)]