Teleostei (teleosts) >
Stomiiformes (Lightfishes and dragonfishes) >
Stomiidae (Barbeled dragonfishes) > Malacosteinae
Etymology: Photostomias: Greek, photos = light + greek, stoma = mouth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 1138 - 3100 m (Ref. 5951). Deep-water; 40°N - 56°S
Western Atlantic: USA to the Gulf of Mexico (Ref. 4429); reported from the Antilles (Ref. 26340). Eastern Atlantic: southern Portugal to Mauritania. Northwest Atlantic: Canada (Ref. 5951). Indo-Pacific: in tropical and temperate areas (Ref. 559). Southeast Pacific: Chile (Ref. 9068).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 16.0 cm TL male/unsexed; (Ref. 26340)
Dorsal soft rays (total): 22 - 28; Anal soft rays: 25 - 32. This species is distinguished by having 2 pairs of basibranchial tooth patches; D 23-26, A 27-30, the sum of dorsal- and anal-fin rays 50-56; male postorbital organ length moderate, specimens greater than 6.0 cm, 45.5-144.5% fleshy orbit, 7.8-28.1% jaw length (JL); male anterior orbital organ length moderate, specimens greater than 6.0 cm, 4.5-21.7% fleshy orbit, 0.8-4.9% JL (Ref. 75669)..
Mesopelagic species (Ref. 4469). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | 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. 130435)
Threat to humans
Harmless
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Estimates based on models
Preferred temperature (Ref.
123201): 2.2 - 4.3, mean 2.9 °C (based on 1537 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00157 - 0.01056), b=3.10 (2.87 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.55 se; based on food items.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).