Schools in underwater rock recesses in groups of up to ca. 10 individuals, associated with very large numbers of Pempheris schwenkii being observed in the same rock recesses .
Dorsal spines (total): 6; Dorsal soft rays (total): 9 - 10; Anal spines: 3; Anal soft rays: 35 - 36; Vertebrae: 25. This species is distinguished by the following characters: lateral and ventral body scales are strongly ctenoid, adherent, with distinct basal and distal portions; abdomen cross-sectional outline U-shaped; a large ventral fenestra between coracoid and cleithrum; dorsal-fin soft rays 10; anal-fin soft rays 35-36; pored lateral-line scales 84-88; scale rows above lateral line 14-15; predorsal scales 50-55; circumpeduncular scales 26. Colouration: body orange copper; blackish blotch on fins is limited to tip of dorsal, anal and caudal fins; a distinct blackish blotch on pectoral-fin base .Cross section: compressed.
Behavioural data for Ogasawara sweeper is currently being reviewed.
Diet information for Ogasawara sweeper is currently being compiled.
Reproduction data for Ogasawara sweeper is currently being compiled.
Marine; benthopelagic; depth range 10 - 16 m . Subtropical Northwest Pacific: Japan (Ogasawara Is.
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