Lampris guttatus (Brunnich, 1788)

Synonim: Lampris regius (Bonnaterre, 1788)

Common name: Opah, Moonfish

Body deep, compressed and oval-shaped. Mouth small, protractile, toothless; low jaw slightly protruding. Dorsal fin longbased, with 51-55 finrays, the first finrays as a falcate lobe; anal fin long-based, low, with 38-41 finrays and without anterior lobe; pectoral and pelvic fins long and sickle-shaped; pectoral fins placed high on sides, their bases horizontal; pelvic fins posterior to pectoral fin origin; caudal fin moderately forked. Scales minute, cycloid, deciduous; lateral line conspicuous, strongly arched over pectoral fin base.

Colour: back blue shading to green, belly silvery, opaque whitish sport over body; fins deep red.

Size: to 185 cm standard length.

Habitat: epi- to mesopelagic to about 400 m.

Food: midwater fishes and invertebrates, mainly squids.