Amblyeleotris masuii Aonuma & Yoshino 1996

Characterized by pale grey color; ventral surface of body whitish; four brown bars on body; head with irregular brown reticulations and in pale spaces between bars; brown bar across operculum; narrow brown bar under eye; narrow brown band behind eye; head with scattered blue spots/streaks; pelvic fins united by low membrane at base of fins; without median predorsal scales; side of nape with scales extending forward above middle of opercle; longitudinal scale series 92-97; greatest depth of body 7.1-8.5 in SL; lanceolate caudal fin, longer than head length (Ref. 90102).

Dorsal spines (total): 7; Dorsal soft rays (total): 13; Analspines: 1; Analsoft rays: 13

Inhabits coastal to outer reef sand slopes to 40 meters depth (Ref. 48637). Specimens collected from sandy bottom at 35 m depth (Ref. 26157).