Paramonacanthus japonicus
Encyclopedia
Paramonacanthus japonicus is a Filefish
Filefish
Filefish are tropical to subtropical tetraodontiform marine fish of the diverse family Monacanthidae. Found in the Atlantic, Pacific and Indian Oceans, the filefish family contains approximately 107 species in 26 genera...

 from the Indo-West Pacific. It occasionally makes its way into the aquarium trade. It grows to a size of 12cm in length.
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