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> Lophiiformes (Anglerfishes) > Gigantactinidae (Whipnose anglers)
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). Eponymy: IOS stands for the Institute of Oceanographic Sciences, England, which supplied the type specimen of the hagfish. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / 深さの範囲 / distribution range 生態学
海 深海浮遊性; 深さの範囲 1005 - 1360 m (Ref. 86949). Deep-water
背面の脊椎 (合計) : 0; 背鰭 (合計) : 5; 肛門の骨: 0; 臀鰭: 5. Esca with a dense cluster of 14-16 short, lanceolate appendages, each with numerous tiny spherical inclusions, emerging from a distal patch of pigment (Ref. 41361); length of illicium 247-256% SL; escal bulb without distal prolongation; escal papillae absent; proximal escal papillae absent; short dentary teeth (longest 1.1-1.4% SL), arranged posteriorly in two longitudinal series; length of caudal fin rays less than 37% SL; weakly developed skin coverage of proximal part of caudal fin; caudal fin rays free nearly to base (Ref. 86949). Body shape (shape guide): short and / or deep.
Known from 3 specimens, the biggest of which is an adolescent female measuring 5.7 cm SL (Ref. 41361).
Life cycle and mating behavior 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Bertelsen, E., 1990. Gigantactinidae. p. 513-515. In J. C. Quero, J. C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 10761)
Phylogenetic diversity index (参照 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
栄養段階 (参照 69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100). 🛈
