Physical Characteristics

Total length 17.7 in (45 cm), but fishes in upper reaches of freshwater streams are much smaller. Body elongate and robust compared to others in this family. Mouth is relatively large, caudal fin slightly emarginate. Color silvery or light gray with black scale margins, becomes very silvery in marine waters. Caudal fin is either black or clear,with black blotches on each caudal lobe. There are 10 spines and 11 soft rays in the dorsal fin, 3 spines and 9-10 soft rays in the anal fin, and 13-14 soft rays in the pectoral fin.

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