分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335); moresbyi: Named for Capt. Moresby of the Indian Navy.
Eponymy: Captain Robert Moresby (1794–1854) of the Indian Navy was a hydrographer, marine surveyor and draughtsman. [...] (Ref. 128868), visit book page.
More on author: Alcock.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 787 - 1071 m (Ref. 48493). 深水域; 15°N - 5°N, 49°E - 77°E (Ref. 114953)
Indian Ocean: Arabian and Laccadive seas (off Travancore coast), Yemen and Somalia; including India (Ref. 118627).
西印度洋: 阿拉伯的與拉克代夫海 (外海的印度特拉凡哥爾海岸).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 35.1 cm TL 雄鱼/尚未辨别雌雄; (Ref. 48493); 39.2 cm TL (female)
简单描述
检索表 | 型态特徵 | 形态测量图
Dark brown dorsal and ventral surfaces; ventral entirely dark. Snout elongated, usually more than 1/3 in disc length (preocular snout region 40% in disc length in lectotype). Disc oval, longer than wide. Dorsal fins with long, fleshy bases which are much longer than height of the fin (dorsal fin length 50-55% of fin height). Origin of first dorsal well anterior to posterior tip of pelvic fins, close to mid pelvic length; dorsal fins close together, interdorsal space less than length of dorsal bases. Distance between second dorsal and caudal fins much smaller than length of base of second dorsal fin. Caudal fin extremely elongated, reaching almost 1/2 tail length as measured from posterior tips of pelvic fins; caudal fin length 40.4% of distance between cloaca and caudal fin tip (Ref. 48493).
深褐色的背面与腹面; 腹的完全深色。 吻延长, 通常超过 1/3 在体盘长度中.(preocular 吻区域 40% 在选方式的体盘长度中) 体盘椭圆形, 长度超过宽的。 背鳍具有长又肉质的基底那是远长过鳍的高度.(背鳍长度 50-55% 的鳍高度) 第一背鳍的起源在腹鳍的后顶端前, 接近腹鳍长度的中央; 背鳍靠拢在一起, 间背片的间隙少于背鳍基底长。 第二背鳍与尾鳍之间的距离远小于第二背鳍基底的长度。 尾鳍非常地延长, 几乎达到 1/2 尾部长度当从腹鳍的顶端后缘测量; 尾鳍长度 40.4% 的泄殖腔与尾鳍顶端之间的距离.(参考文献 48493)
A benthic species on continental slope. Probably suction feeds on bottom-dwelling invertebrates based on its oral morphology. Biology little known. Maturity size uncertain, probably close to 18 cm TL in males (Ref. 114953).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
西印度洋: 阿拉伯的與拉克代夫海 (外海的印度特拉凡哥爾海岸).
de Carvalho, M.R., 1999. A synopsis of the deep-sea genus Benthobatis Alcock, with a redescription of the type species Benthobatis moresbyi Alcock, 1898 (Chondrichthyes, Torpediniformes, Narcinidae). p. 231-255. In Séret B. & J.-Y. Sire [eds]. Proc. 5th Indo-Pac. Fish Conf., Noumea, 1997. (Ref. 48493)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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Estimates based on models
Preferred temperature (Ref.
123201): 2.7 - 6.7, mean 6.3 °C (based on 5 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00470 - 0.02937), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (29 of 100).
