分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
(Lightfishes and dragonfishes) > Sternoptychidae
(Marine hatchetfishes) > Sternoptychinae
Etymology: Argyropelecus: Greek, argyros = silvered, silver + Greek, pelekys = axe (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
; 海 深海浮遊性; 深さの範囲 0 - 2400 m (Ref. 74511), usually 100 - 700 m (Ref. 28981). Deep-water; 60°N - 56°S
Eastern Atlantic: north of British Isles to South Africa, including western Mediterranean. Western Atlantic: New Jersey, USA to Argentina (Ref. 26340). Northwest Atlantic: Canada (Ref. 5951). Eastern Pacific: throughout the California Current area, seaward of the continental shelf (Ref. 35838). Known from tropical and subtropical waters of all oceans (Ref. 47377). South China Sea (Ref.74511).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 3 - ? cm
Max length : 5.1 cm TL オス/雌雄の選別がない; (Ref. 96016); 最大公表体重: 1.40 g (Ref. 96016); 最大記録サイズ: 1.00 年 (Ref. 5168)
背面の脊椎 (合計): 0; 背鰭 (合計): 8-9; 肛門の骨 0; 臀鰭: 11 - 12; 脊つい: 36 - 39. Body bright silvery in color; body and trunk with dusky coloration at night (Ref. 4054). Branchiostegal rays: 10 (Ref. 35838).
Oceanic (Ref. 4739) and mesopelagic, mainly at 250-650 m (Ref. 4054). Depth range from 100-700 m (Ref. 4462) and from 460-1082 m in the eastern Ionian Sea (Ref. 56504). Adults make marked vertical migrations (Ref. 4739). Found singly or in small groups (Ref. 4739). An opportunistic feeder at dusk on calanoid copepods, small fishes, etc (Ref. 4739). Sexual dimorphism with regard to body size (Ref. 5168), the males being slightly smaller than the females (Ref. 8966). Oviparous, with planktonic eggs and larvae (Ref. 35838).
Occurs between 200 and 700 m depth during the day, concentrated between 350 and 550 m, and between 100 and 650 m at night, preferring a depth between 150 and 380 m Ref. 47377). Also Ref. 58302.
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Spawns more than once per season with egg batches about 50-500 egg/ovary pair, the number increasing with increased animal size (Ref. 4739).
Gon, O., 1990. Sternoptychidae. p. 123-126. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5168)
CITES (Ref. 123416)
Estimates based on models
Preferred temperature (Ref. 115969
): 5.5 - 21.3, mean 11.3 °C (based on 2694 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00635 - 0.03140), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
栄養段階 (Ref. 69278
): 3.1 ±0.14 se; based on food items.
回復力 (Ref. 120179
): 高い, １５か月以下の倍増期間の最小個体群 (tm=1; tmax=1).
弱み (Ref. 59153
): Low vulnerability (13 of 100) .