分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Holocephali
全頭亞綱 (銀鮫科) (chimaeras) >
Chimaeriformes (Chimaeras)
銀鮫目 (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
短鼻銀鮫科 (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors. (See ETYFish); trolli: In honor of American artist Ray Troll (b. 1954), Ketchikan, Alaska (USA), “one of the few true chimaeroid lovers of the world ... for his valiant efforts to increase ratfish awareness worldwide”. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 612 - 1707 m (Ref. 45071). 深水域
Western Pacific: New Caledonia and New Zealand.
西太平洋: 新加勒多尼亞與紐西蘭。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 112 cm TL 雄魚/尚未辨別雌雄; (Ref. 45071); 120.4 cm TL (female); 最大體重: 8.8 kg (Ref. 122636)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Body blue-gray with a dark line around the orbit and dark shadowing along edges of lateral-line canals. Snout pointed. Preopercular and oral lateral-line canals sharing a common branch. D1 concave with pale margin. Males with frontal tenaculum deeply curved, upturned distally with spines along dorsal upturned edge. Prepelvic tenacula deeply indented along distal margin. Pelvic claspers with pale fleshy distal lobes, divided distally for 1/3 their length, tips usually extending beyond distal edge of pelvic fins. Ventral caudal fin not deeply indented at its origin to form a separate anal fin.
身體藍灰色的具有一個眼窩的周圍黑色線條與深色的遮蔽沿著側線管的邊緣。 吻端尖的。 前鰓蓋骨與口部的側線管共用一個分枝。 D 1 凹的有灰白的邊緣。 雄性有前的把鉤深深地彎曲, 朝上的末梢部地和棘沿著背部的朝上邊緣。 腹鰭前的把鉤深深凹入的沿著末梢部的邊緣。 腹鰭釦緊物有灰白的對於 1/3 他們的長度末梢部地被分開的肉質的末梢部的葉，頂端通常延伸超過腹鰭的末梢部邊緣。 腹面尾鰭不深深地在它的起源切割成鋸齒狀形成一個分開的臀鰭。
Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205). Reported sexual maturity at 550-65.0 cm BDL or body length (Ref. 116866).
卵生的.(參考文獻 205) 卵被包在角狀的外型突起中。 (參考文獻 205)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Oviparous (Ref. 205).西太平洋: 新加勒多尼亞與紐西蘭。
Didier, D.A. and B. Séret, 2002. Chimaeroid fishes of New Caledonia with description of a new species of Hydrolagus (Chondrichthyes, Holocephali). Cybium 26(3):225-233. (Ref. 45071)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 19 February 2015
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Estimates based on models
Preferred temperature (Ref.
123201): 3.4 - 6.9, mean 4.8 °C (based on 322 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00118 - 0.00673), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming Fec <100).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (72 of 100).
