Actinopterygii (ray-finned fishes) >
Myctophiformes (Lanternfishes) >
Myctophidae (Lanternfishes) > Lampanyctinae
Etymology: Nannobrachium: Latin, nannus = small + Latin, brachium = the upper arm from the shoulder to the elbow; 1731 (Ref. 45335); ritteri: Named after Dr. Ritter, Director of the Scripps Institution of Oceanography (Ref. 6885).
Environment / Climate / Range
Ecology
Marine; bathypelagic; depth range 20 - 1095 m (Ref. 6885). Deep-water; 54°N - 18°N, 135°E - 111°W
Northeast Pacific: British Columbia, Canada to Baja California, Mexico. Bekker (1983) reported a distribution from off Central and South America but this is an error (Ref. 36121). Larvae collected from Taiwan Strait (Ref. 43570).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm SL male/unsexed; (Ref. 36121)
Short description
Morphology | Morphometrics
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 14-16;
Anal
spines: 0;
Anal
soft rays: 18 - 19;
Vertebrae: 36 - 38. 15-16 AO photophores; 7-8 tooth patches on lower limb of second gill arch; 35-38 lateral line organs (Ref. 36121). Pectoral fins well developed with rather robust, stout rays (Ref. 36121). Nearly black to metallic blue dorsally, lighter on sides, black in mouth and gill cavity; fins dusky, marked with fine wavy lines (Ref. 6885).
Epipelagic to mesopelagic (Ref. 31442). Adults feed on Sagitta, young fishes, copepods, and euphausiids (Ref. 6885). Oviparous, with planktonic eggs and larvae (Ref. 31442). Lipid content is 14.2 % in fresh body weight and wax ester is 58% in total lipids (Ref. 9197).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Zahuranec, B.J., 2000. Zoogeography and systematics of the lanternfishes of the genus Nannobrachium (Myctophidae: Lampanictini). Smithson. Contrib. Zool., 607:1-69. (Ref. 36121)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates of some properties based on models
Preferred temperature (Ref.
115969): 5.4 - 9.7, mean 7.1 (based on 27 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00470 - 0.02030), b=3.19 (3.00 - 3.38), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic Level (Ref.
69278): 3.4 ±0.45 se; Based on food items.
Resilience (Ref.
69278): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100) .