Smooth Oreo

First dorsal spine longer than second dorsal spine. Opercles fully scaled (Ref. 27159).Female adult chocolate brown in color with darker fins; prejuveniles silvery with numerous dark spots of various sizes which become larger with age (Ref. 6548).

Displays seasonally synchronised reproduction (Ref. 6390).

Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.

Dorsal spines (total): 5 - 7; Dorsal soft rays (total): 33 - 36; Anal spines: 2 - 3; Analsoft rays: 31 - 34; Vertebrae: 40 - 43

Occurs on the continental slope. Benthic species (Ref. 75154).

Inhabit continental slopes of all southern continents (Ref. 6545). Adults found near the bottom; juveniles near the surface, usually in association with krill (Ref. 5194). Feed mainly on salps (Ref. 27150). Eggs float near the sea surface and larvae also inhabit surface waters (Ref. 6390). There is no vertical migration during the day or night (Ref. 27150).

fisheries: commercial

Known from seamounts and knolls