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Nannobrachium ritteri  (Gilbert, 1915)

Broadfin lampfish
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Nannobrachium ritteri   AquaMaps   Data sources: GBIF OBIS
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Image of Nannobrachium ritteri (Broadfin lampfish)
Nannobrachium ritteri
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drawing shows typical fish in this Family.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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).

Biology     Glossary (e.g. epibenthic)

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

Oviparous (Ref. 31442).

Main reference Upload your references | References | Coordinator : Paxton, John | Collaborators

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)

  Not Evaluated 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

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More information

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Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

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):  PD50 = 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) .