file·fish /ˈfaɪ(ə)lˌfɪʃ/
豚魚
File·fish n. Zool. 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.
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filefish
n : narrow flattened warm-water fishes with leathery skin and a
long file-like dorsal spine
[also: filefishes (pl)]