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Author: (Richardson, 1845)

Notoscopelus (Notoscopelus) resplendens (Richardson, 1845)

Diagnosis: dorsal finrays 22-23 (21-24); anal finrays 18-19 (17-20); pectoral finrays 12-13 (11). Gillrakers 6 (5-7) + 1 + 13-14 (12-15), total 20-21 (19-23). AO 8 (7-9) + 5 (4-7), total 13 (12-14). Males with large supra-caudal gland only, consisting of 8-9 scale-like luminous segments. Size: to 95 mm.

Habitat: high-oceanic, mesopelagic. Canaries: day at 25-100 m (larvae), 700-800 m (transforming specimens), 700-1,250 m (juveniles) and 1,500-2,000 m (adults); night at 25-200 m (larvae), 600-800 m (transforming specimens), 10-100 m (juveniles), 50-100 m (adults). Bermuda: day at 50-100 m (post-larvae), 651-1,150 m (juveniles/adults); night at 50-300 m (maximum abundance at 101-200 m). Nyctoepipelagic at surface in cooler waters. Larvae and transforming specimens non-migratory (Canaries). Food: no data. Reproduction: caudal glands develop in males at 41 mm; sexually mature from about 66 mm. Spawning in late autumn-winter (Bermuda).

Distribution: Atlantic: broadly tropical pattern (holo-eurytropical subpattern), between 47° N (western sector) or 35° N (eastern sector) south to Subtropical Convergence, but with discontinuity over minimum region off Brazil and lower abundance in Mauritanian upwelling region. Elsewhere: Indian Ocean (between 24° and 30° S), western North Pacific (south to off Australia and New Zealand), eastern Pacific (from 35° N to 34° S, west of 80° W, but to 20° S in Peruvian transitional zone).

Eggs, larvae and young stages. Moser & Ahlström, 1972: 551, fig. 6 A-D.
Otoliths (sagitta). Kotthaus, 1972a: 15, 27, fig. 95.

Notoscopelus resplendens