Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Stomiidae
(Barbeled dragonfishes) > Malacosteinae
Etymology: Photostomias: Greek, photos = light + greek, stoma = mouth (Ref. 45335); lucingens: Name from Latin 'lucis' for light and 'ingens' meaning ‘of remarkable size’, referring to the extreme size of the light-producing postorbital photophore in males.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic. Subtropical
Pacific: Lord Howe Rise to the East Pacific Rise in the South Pacific; the Philippines to the Hawaiian Arch.. Eastern South Atlantic (from 5°S to 23°S).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.9 cm SL male/unsexed; (Ref. 80463)
Morphology | Morphometrics
soft rays: 26 - 30. This species differs from its congeners in having the following set of characters: male postorbital photophore (PO) large, 26.8-39.9% upper jaw length (UJL), in specimens greater than 60 mm (vs. small to moderate, 7.8-28.1% UJL, in all its congeners except P. atrox); female PO moderate, 10.3-15.0% UJL, in specimens greater than 60 mm (vs. small, 6.1-11.1% UJL, in P. tantillux and P. goodyeari); male AO small, 2.4-4.7% UJL, in specimens greater than 60 mm (vs. large, 4.9-9.6% UJL, in P. tantillux and P. atrox); three tooth patches positioned at posterior end of the first, second, and third basibranchials (vs. two basibranchial tooth patches in P. guernei); total dorsal- and anal-fin rays 49-55, rarely 47, 48, or 56 (vs. 57-63, rarely 56, in P. goodyeari); females maturing at a small size, approximately 60 mm (vs. greater than 100 mm in P. atrox and P. liemi) (Ref. 80463).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kenaley, C.P., 2009. Revision of Indo-Pacific species of the loosejaw dragonfish genus Photostomias (Teleostei: Stomiidae: Malacosteinae). Copeia 2009(1):175-189. (Ref. 80463)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00165 - 0.01051), b=3.11 (2.88 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (18 of 100) .