Actinopterygii (ray-finned fishes) > Myctophiformes
(Lanternfishes) > Myctophidae
(Lanternfishes) > Lampanyctinae
Etymology: Stenobrachius: Greek, stenos = narrow + Latin, bracchium = arm (Ref. 45335).
Environment / Climate / Range
Marine; bathypelagic; depth range 31 - 3400 m (Ref. 50550), usually 31 - 1189 m (Ref. 4925). Deep-water, preferred ?; 66°N - 29°N, 128°E - 113°W
North Pacific: Japan to Bering Sea and to northern Baja California, Mexico.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.0 cm TL male/unsexed; (Ref. 2850); max. reported age: 8 years (Ref. 6885)
soft rays: 14 - 16;
Vertebrae: 35 - 38. Adipose fin small and slender; pectorals slender and short (Ref. 6885). Gray to dark greenish blue on dorsally, lighter ventrally; black on operculum and fins; golden or claret on photophores (Ref. 6885). Branchiostegal rays: 9-10 (Ref. 31442).
Epipelagic to mesopelagic (Ref. 31442). Adults move upward in large numbers at night (Ref. 28499). Feed on fishes, copepods and euphausiids (Ref. 11712). Oviparous, with planktonic eggs and larvae (Ref. 31442). Lipid content is 15.6 % in fresh body weight and wax ester is 90.9 % in total lipids (Ref. 9197). Minimum depth from Ref. 004925.
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p. (Ref. 2850)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00399 - 0.01990), b=3.06 (2.86 - 3.26), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.0 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.24-0.34; tm=4; tmax=8).
Prior r = 0.61, 2 SD range = 0.32 - 1.16, log(r) = -0.49, SD log(r) = 0.33, Based on: 4 K, 1 tgen, 1 tmax, records
Vulnerability (Ref. 59153
): Low to moderate vulnerability (33 of 100) .