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). More on author: Alcock.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 141 - 533 m (Ref. 75669). Subtropical
Circumtropicam: Subtropical and tropical waters of the eastern North Atlantic and throughout the South Atlantic to 23°53'S, rare in the western North Atlantic; Arabian Sea, Bay of Bengal, Indo-Pacific, central North Pacific.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.4 cm SL male/unsexed; (Ref. 75669)
Morphology | Morphometrics
soft rays: 26 - 30;
Vertebrae: 55 - 57. This species is distinguished by having 3 pairs of basibranchial tooth patches; D 22-26, A 26-30, the sum of dorsal- and anal-fin rays 49-55; male postorbital organ length large, specimens greater than 6.0 cm, 72.1-197.2% fleshy orbit, 16.7-46.6% JL; anterior orbital organ length large, specimens greater than 6.0 cm, 9.2-37.8% fleshy orbit, 2.1-9.6% JL (Ref. 75669).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kenaley, C.P. and K.E. Hartel, 2005. A revision of Atlantic species of Photostomias (Teleostei: Stomiidae: Malacosteinae), with a description of a new species. Ichthyol. Res. 52(3):251-263. (Ref. 75669)
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
Preferred temperature (Ref. 115969
): 11.6 - 20.1, mean 15.4 (based on 120 cells).
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
): 4.0 ±0.7 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 to moderate vulnerability (25 of 100) .