分类 / Names
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Teleostei >
Anguilliformes (Eels and morays) >
Synaphobranchidae (Cutthroat eels) > Ilyophinae
Etymology: Dysomma: Greek, dys, dyo = two + Greek, omma = eye; longirostrum: Specific name refers to its long snout..
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 100 - 150 m (Ref. 39632). 溫帶
分布
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Western Pacific: Taiwan and New Caledonia.
西北太平洋: 台灣。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 28.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 106136)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 130. This species is characterized by the following: with pectoral fin; origin of dorsal fin above tip of pectoral fin, predorsal length 17.9-18.6% TL; without intermaxillary teeth; snout very long, its length 25.7-32.1% HL; jaw long and slender, upper jaw length 42.0-52.1% HL; anus posterior, far behind pectoral fin, preanal length 24.0-24.3% TL; trunk is moderately long, trunk length 9.7-10.3% TL; upper jaw with multiple rows of teeth on upper jaw; multiple rows of small teeth on lower jaw, those on inner row larger than the rest; vomer with 5 compound teeth; head pores: SO 5, IO 8 (2 between nostrils, 2 below eye, 4 behind eye), M 7, POP 2, AD 1, ST 0, F 1; lateral-line pores: predorsal 11, prepectoral 3-6, preanal 20, total ca. 77 or ca. 96, the last at 2/3 HL before caudal fin; MVF 14-24-130 (holotype only); colour of body uniformly brown when preserved (Ref. 39632, 106136).
身体没有鳞片。 长的吻, TL 中的 4.6。 长的，强的，和细长的颚; 上颌长度 8.2% 的 TL; 上颌比下颌长。 腹侧的鳃缝, 在胸鳍基底之下。 肛门遥远地向前, 在胸鳍顶端后面的一口裂长度细的。 侧线几乎完成, 长度 95.6% 的 TL, 具有一个连接每一其他的成对侧线孔的管状的凹槽。 头部侧线孔的数字: 眶下的 8; 眶上的 5; 鳃颚前的 9.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
西北太平洋: 台灣。
Chen, Y.-Y. and H.-K. Mok, 2001. A new synaphobranchid eel, Dysomma longirostrum (Anguilliformes: Synaphobranchidae), from the northeastern coast of Taiwan. Zool. Stud. 40(2):79-83. (Ref. 39632)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.7 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (19 of 100).
