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 - 3000 m (Ref. 50610), usually - m (Ref. ). Deep-water; 0°C -
Atlantic Ocean and Pacific Ocean.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 38.4 cm SL (female)
Morphology | Morphometrics
soft rays: 4 - 5. Metamorphosed females distinguished by the following characteristics: have single proximal lateral pair and two distal pairs of large escal filaments and lacking distinct distal prolongation of the escal bulb; length of illicium less than 130% SL (93-126%SL); absence of escal papillae; relatively short dentary teeth (longest 3.3% DL), arranged in five or six longitudinal series; longest caudal fin rays 21-32.5% SL (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. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 3.1 - 11.2, mean 6.1 °C (based on 429 cells).
Phylogenetic diversity index (Ref. 82805
= 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
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .