Eighteen specimens of Sardinella gibbosa (Bleeker, 1849) collected from Okinawa Island, Ryukyu Islands, Japan represent the first Japanese specimen-based records species. All conformed closely to diagnosis S. gibbosa, having caudal fin uniformly pale, a black spot on dorsal-fin origin, body scales with centrally discontinuous striae, 26−31+50–57=77–88 gill rakers arch, and 18 or 19+14 15=32–34 ...