分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Siluridae (Sheatfishes)
Etymology: Ceratoglanis: Greek, keras, -atos = horn + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); pachynema: From pachys, Greek for thick and nema, Greek for thread, in reference to the thickened maxillary barbels of mature males..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶
Asia: Chao Phraya and Mekong drainages. Previously misidentified as
Ceratoglanis scleronema from the Chao Phraya drainage.
亞洲: 湄南河與湄公河流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 28.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 43281)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 背的软条 (总数) : 0; 臀鳍软条: 90 - 101; 脊椎骨: 63 - 64. Snout with a gently sloping ventral profile (ventral angle of snout 40°-42°), relatively fewer anal-fin rays (90-101), and larger eyes (eye diameter 13.0-16.4% HL) set closer together (interorbital distance 33.7-36.6% HL). Mature males have membranous extensions on both the anterior and posterior edges of the maxillary barbel. Pectoral spine and articulated segments sexually dimorphic in mature individuals. Males with spine broad and somewhat flattened dorsoventrally, with 10 distinct posterior serrate, increasing in size distally; proximal articulated segments with 17 well-developed posterior serrae; distal-most segments have smaller serrae. Females or juveniles with spine slender and without serrae; proximal articulated segments with 6 minute posterior serrae; distal segments with 5 minute serrae (Ref. 38651). Absence of dorsal fin; short stiff hooked maxillary barbels; posterior nostril above front margin eye (Ref. 43281).
吻部有被设定的一个缓斜坡的腹轮廓 (吻的腹面角 40 °-42 °) ，相对较少的臀鳍棘条 (90-101) 与比较大的眼 (眼直径 13.0-16.4% HL) 比较靠近的一起 (眼间距 33.7-36.6% HL). 成熟的雄鱼有颚触须的膜状的延长在前缘与后缘。 胸棘而且接合片段性别双型性在成熟的个体中。 雄性有棘宽的而且略微有背腹性地平的, 具有 10 明显的在后部的锯齿状的, 末梢部地在大小方面增加; 具有 17个发展良好的在后部锯齿的近端被接合的片段; 末梢部-大多数的片段有小的锯齿。 雌性或稚鱼有棘细长的而且没有锯齿; 近端的被接合的片段 6 细小的在后部的锯齿; 末梢部的片段 5 细小的锯齿。 (参考文献 38651) 没有背鳍; 短的硬钩上颌骨触须; 在眼睛前缘上面的后鼻孔.(参考文献 43281)
Inhabits mainstream river. Carnivorous, feeding on insects and benthic fauna (Ref. 58784).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
亞洲: 湄南河與湄公河流域。
Ng, H.H., 1999. A review of the Southeast Asian catfish genus Ceratoglanis (Siluriformes: Siluridae), with the description of a new species from Thailand. Proc. Calif. Acad. Sci. 51(9):385-395. (Ref. 38651)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00278 - 0.01137), b=3.00 (2.83 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.9 ±0.7 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (24 of 100).
