Percis matsuii is a fish in the family Agonidae.

[3] 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 200 to 500 metres (660 to 1,640 ft), and inhabits sand and mud sediments.

Males can reach a maximum standard length of 15 centimetres (5.9 in).

[2] 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.