分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Argentiniformes (Marine smelts)
胡瓜魚目 (Marine smelts) >
Microstomatidae (Pencil smelts)
小口鮭科 (Pencil smelts)
Etymology: megalopa: Named for the extraordinarily large eye.
Eponymy: Fridtjof Nansen (1861–1930) was a Norwegian explorer, scientist, diplomat and later recipient of the Nobel Peace Prize. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海區的; 深度上下限 0 - 1300 m (Ref. 5123). 深水域; 10°N - 20°S
Eastern Atlantic: Ascension Island.
東大西洋。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 14.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 5123)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 9 - 10; 臀鰭軟條: 8 - 10; 脊椎骨: 44 - 45. Branchiostegal rays 4. Eye very large, eye diameter to snout length ratio > 2 to 1 (Ref. 5123).
鰓條骨 4. 眼非常大的, 吻的長度比 > 的眼直徑 2 到 1.(參考文獻 5123)
A specimen of 12.65 cm SL had ripe ovarian eggs (Ref. 5123).
一件 12.65 公分 SL 的標本有了成熟的卵巢卵。 (參考文獻 5123)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
東大西洋。
Kawaguchi, K. and J.L. Butler, 1984. Fishes of the genus Nansenia (Microsomatidae) with descriptions of seven new species. Los Angeles County Mus. Contr. Sci. 352:1-22. (Ref. 5123)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
人類使用
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Estimates based on models
Preferred temperature (Ref.
123201): 1.9 - 2.7, mean 2.5 °C (based on 618 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
