分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Alepocephaliformes (Slickheads and tubeshoulders.)
胡瓜魚目 (Slickheads and tubeshoulders.) >
Alepocephalidae (Slickheads)
黑頭魚科 (Slickheads)
Etymology: Alepocephalus: Greek, alepos, alepidotos = without scales + Greek, kephale = head (Ref. 45335); planifrons: Named for its wide, smooth upper surface on the head.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
海洋 深海底的; 深度上下限 400 - 750 m (Ref. 41471). 深水域
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southeast Pacific.
東南太平洋。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 31.7 cm SL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 17 - 20; 臀鰭軟條: 18 - 21; 脊椎骨: 52 - 54. Head relatively short, <39.5-0.025% SL. Snout short (22-28%HL); broadly triangular anteriorly when viewed from above. Orbit diameter about 1/5 to 1/4 HL, along the whole upper edge and on the separate elongate-shaped part of the lower-posterior part of the orbit are accumulation s of whitish connective tissue. Interorbital space very wide, ca. 17-30% HL, flat, narrows very slightly at the middle of the orbit. Upper jaw extends to below the center of the orbit. Branchiostegal rays 8-9. Transverse rows of scales above lateral line 60-65, 30-35 predorsal. Gill rakers' length less than gill lamellae length, and completely free at the base. Opercle has a projection at the lower anterior corner; subopercle has a wide posterior edge usually with no separate processes. Anus not shifted forward from the origin of the anal fin. Pyloric caeca 12-18 (Ref. 41471).
Body shape (shape guide): elongated; Cross section: compressed.
頭部相當短的,<39.5-0.025% SL。 吻短 (22-28% HL); 寬廣三角形前面地當從上方看了。 眼窩直徑大約 1/5 對 1/4 HL, 沿著整個的上緣與在個別延長-形狀部份上下面的-眼窩的較後面的部分是微白色連接著組織的積聚 s。 眼間隔非常寬的, 大約 17-30% HL, 平坦的, 狹窄的非常些微地在眼窩的中央。 上頜在眼窩的中心之下延伸到。 鰓條骨 8-9. 橫跨的列鱗片在側線上面 60-65,30-35 前背的。 鰓耙的長度少於鰓小片長度, 而且完全地在基底分離。 鰓蓋的在下面的前面角落有一個突出; 子鰓蓋有一個寬的後緣通常有沒有個別的突起。 肛門不改變向前的從臀鰭起點。 幽門盲囊 12-18.(參考文獻 41471)
Inhabits continental slopes.
棲息於大陸斜坡。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
東南太平洋。
Sazonov, Y.I., 1994. A new species of slickhead Alepocephalus planifrons (Alepocephalidae) from the southeastern Pacific. J. Ichthyol. 34(2):104-111. (Ref. 41471)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
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Estimates based on models
Preferred temperature (參考文獻
123201): 2.2 - 4, mean 2.6 °C (based on 75 cells).
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00163 - 0.00737), b=3.19 (3.00 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.6 ±0.2 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (29 of 100).
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