Author: (Bonaparte, 1840)
Notolepis rissoi (Bonaparte, 1840)
Status in World Register of Marine Species:
Accepted name: Arctozenus risso (Bonaparte, 1840) (updated 2009-06-25)
Diagnosis: body elongate, its depth 10 or more times in SL. Snout pointed, about half head length; gillrakers needle-like in multiple series on bony bases. Dorsal fin short, well behind midpoint of body, with 9-10 finrays; a small adipose dorsal fin near tail; pectoral finrays 11-13; pelvic fins behind dorsal fin base, with 9 finrays; anal fin far back on body, with 30-32 finrays. Anus between pelvic fins. Body scaled, but scales delicate and easily shed; 62-67 scales in lateral line. Vertebrae 77-84. Colour: Iarge melanophores scattered to make dark dorsal band. Size: to 29 cm.
Habitat: mesopelagic, some pseudoceanic, mainly at 200-1,000 m, singly or in small schools of a few hundred individuals. Food: mainly fishes and shrimps. Reproduction: in temperate and subtropical waters.
Distribution: throughout area. Elsewhere, worldwide, from Arctic to Antarctic.
Eggs, larvae and young stages. Sanzo, 1917: 3-9 | Ege, 1930: 15-17, 23-25 | Tortonese, 1956: 911.
Otoliths (sagitta). No data.