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Teleostei > Eupercaria/misc (Various families in series Eupercaria) 鱸形目 (Various families in series Eupercaria) > Gerreidae (Mojarras) 銀鱸科 (Mojarras)
Etymology: Gerres:Latin, gerres = a kind of anchovies; cited by Plinius. More on author: Cuvier.
Indo-Pacific: Red Sea and East Africa to Samoa and Tonga, north to the Ryukyu Islands, south to New Caledonia. 印度-太平洋: 紅海而且東非到美屬薩摩亞與東加, 北至琉球群島, 南至新加勒多尼亞。
大小 / 重量 / 年齡
成熟度: Lm? range ? - ? cm Max length : 30.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 1602); common length : 15.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 2871)
背棘 (總數) : 9; 背的軟條 (總數) : 10; 臀棘: 3; 臀鰭軟條: 7. Scales between 5th dorsal fin spine base and lateral line, 4-4.5. Upper jaw extending almost to the level of anterior margin of dermal eye opening. Second dorsal fin spine longest, 19-26% of SL (mean 23%). Caudal fin dusky (rarely with dark distal margin); lower edge of lower caudal fin hyaline. Dusky stripes absent or very indistinct along scale rows above lateral line (sometimes 4-9 slightly oblique dusky bands in specimens less than about 10 cm SL); 4-9 slightly oblique dusky bands or columns of ovoid dark spots (rarely brownish) immediately below lateral line, but more obvious in preserved or stressed live specimens (Ref. 41108). Adult body plain silver; may have faint dusky bars especially juveniles. Body elongate, depth max 2.8-3.3 in SL. Preopercle lower flange scaleless. Caudal fin forked deeply and with long lobes; pectoral fins do not reach beyond level of anus. (Ref. 90102) Body shape (shape guide): fusiform / normal; Cross section: compressed. 在第 5個背鰭棘基底與側線之間的鱗片 ,4-4.5. 上頜幾乎延伸到眼皮開口的前緣的水平。 第二背鰭鰭棘長的,19-26% fo SL.(平均 23%) 尾鰭暗色的;(很少有深色的末梢部的邊緣) 下尾部鰭的下緣透明的。 暗色的斑紋不存在或非常不明顯的沿著鱗片列在側線上面;(有時在標本的 4-9條些微斜暗色的條紋少於大約 10 公分 SL) 4-9條卵形深色的斑點 (非褐色的) 的些微斜暗色的條紋或水團緊鄰側線下方, 但是更明顯的在保存或受驚嚇的活體中.(參考文獻 41108)
Prefers coralline areas (Ref. 30573). Migrates to specific sandy areas near outer reef edge to spawn in late afternoons during full moon. Feeds on small benthic organisms living on sandy bottoms (Ref. 3409, 48635). In Palau, migrates to specific sandy spots near the outer reef edge to spawn in late afternoons around full moon (Ref. 37816). Forms schools. Feeds on small invertebrates found in the sand. Marketed fresh (Ref. 12915).
