Physical Characteristics

Slender and elongate, with a long head and sharply pointed snout and a large, toothless mouth, with the lower jaw projecting far beyond the upper. Long and spineless dorsal fin with 52-61 segmented rays, long and spineless anal fin with 26-33 segmented rays, and forked caudal fin. Has 106-126 (usually 112-124) oblique folds of skin called plicae with cycloid scales underlying them and 63-71 vertebrae (usually 65-70). Coloring is olive, brownish, or bluish green above, with silvery sides and a white belly; some have a longitudinal stripe of iridescent steel blue along each side. Grows to 6.3 in (16 cm).

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