Uraspis helvola (Forster & Schneider, 1801)
These jacks generally live in deep water beyond sport-diving depths and are mainly nocturnal . Subadults, however, sometimes occur in shallow water where they rest by day in stationary schools, occasionally intermingling with Bigeye Jacks (Caranx sexfasciatus). Subadults are silvery gray with seven broad dark bars, darker on the underside. The bars fade with growth; they can change color from silvery gray with faint bars to entirely black. Adults are uniform grayish brown to black. The dark mouth is upturned and the tongue, roof and floor of the mouth are bright white. Small juveniles are yellowish with dark bars, but can change to uniformly dark. They sometimes accompany large pelagic jellyfish or hang about under floats and buoys. . The Hawaiian name läuli means “overcast” or “dark.” The species name means "honey," probably because of the juvenile coloration. To about 21 in. Indo-Pacific and tropical Atlantic (St. Helena). Photo: Hanauma Bay, O`ahu. 25 ft.
