Percis matsuii is a fish in the family Agonidae. It was described by Matsubara in 1936.Matsubara, K., 1936 (20 June) [ref. 13719] On two new species of fishes found in Japan. Annotationes Zoologicae Japonenses v. 15 (no. 3): 355-360. It is a marine, deep water-dwelling fish which is known from southern Japan, in the northwestern Pacific Ocean. It dwells at a depth range of , and inhabits sand and mud sediments. Males can reach a maximum standard length of .
Due to its moderately wide distribution in its region, and due to a lack of interest from fisheries, the IUCN redlist currently lists P. matsuii as Least Concern.
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