Actinopteri (ray-finned fishes) > Lophiiformes
(Anglerfishes) > Gigantactinidae
Etymology: Gigantactis: Greek, 'gigas' or 'gigantos' = gigantic + Greek, 'aktis' = ray (referring to the unusually long first dorsal-fin spine that functions as a lure in this genus) (Ref. 86949).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 500 - 1535 m (Ref. 559). Deep-water
Indo Pacific Ocean.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 41.0 cm TL male/unsexed; (Ref. 559)
Morphology | Morphometrics
soft rays: 6. Metamorphosed females distinguished by the following characteristics: length of illicium 134-354% SL; four or five pairs of large, distal escal filaments; 30-50 proximal filaments centered on an anterior margin of escal bulb; absence of escal papillae; relatively short dentary teeth (longest 2.3% SL), arranged posteriorly on four longitudinal series; second and seventh caudal fin rays extremely long (30-47 and 54-76% SL respectively); males unknown (Ref. 86949).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 2 - 7.4, mean 5.5 °C (based on 182 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.7 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100).