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Teleostei > Siluriformes (Catfishes) > Claroteidae (Claroteid catfishes)
Etymology: Chrysichthys:Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335); polli:Named after Dr. M. Poll, a well-known ichthyologist (Ref. 47263). Eponymy: Dr Max Fernand Leon Poll (1908–1991) was a Belgian ichthyologist, and ‘connoisseur of the fish fauna’. [...] (Ref. 128868), visit book page.
背棘 (总数) : 1; 背的软条 (总数) : 6; 臀鳍软条: 12 - 14. Body moderately elongate (Ref. 47263). A deep head, its height more than 66% of the head length (Ref. 47263). An obtusely pointed snout, slightly rounded (Ref. 47263). Eye-diameter longer than the length of the nasal barbel (Ref. 47263). Nasal barbel short, hardly reaching the anterior edge of the orbit; maxillary barbel moderate reaching the tip of the humeral spine; outer mandibulary barbel moderate, up to the posterior end of the operculum; inner mandibulary barbel reaching the end of the orbit; the two pairs of slender mandibulary barbels are distantly set and in between small papillae are found (Ref. 47263). A low number, 13-14, of slender gill rakers (Ref. 47263). Humeral spine well developed, but not reaching beyond the level of the dorsal spine (Ref. 47263). Dorsal spine short, strongly serrated on the posterior side; pectoral spine well developed, strongly serrated on the inner side (Ref. 47263). Dorsal fin short, much shorter than the head length; pectoral fin short, not reaching the base of the ventral fin; anal fin moderate, its base longer than or equal to the base of the adipose fin (Ref. 47263). Adipose fin small, the length of its base shorter than the length of the base of the dorsal fin (Ref. 47263). Preserved specimens are dark brown above the lateral line and lighter beneath; sometimes there is a black band behind the operculum (Ref. 47263). The dorsal and caudal fin may show a tiny black margin (Ref. 47263). Body shape (shape guide): elongated. 身体中等细长的.(参考文献 47263) 一个深的头部, 它的高度超过 66% 的头长.(参考文献 47263) 圆头尖的吻, 略圆的。 (参考文献 47263) 眼-直径长度超过鼻触须的长度.(参考文献 47263) 鼻的触须短,刚刚达到眼窝的前缘; 上颌骨触须中等的被达到的肱骨棘的顶端; 外部的下颚触须中等的, 向上到鳃盖的后端; 内部的下颚触须达成眼窝的末端; 两者对细长的下颚触须远远地被设定与在小的乳突之间被发现.(参考文献 47263) 一个低的数字,13-14, 细长鳃耙.(参考文献 47263) 肱骨的棘发展良好的, 但是不超过背部棘的水平.(参考文献 47263) 背棘短,在后面的侧边上深锯齿状的; 胸棘发展良好的, 在内部的侧边上深锯齿状的。 (参考文献 47263) 背鳍短, 远短于头长; 胸鳍短, 不达到腹鳍的基底; 臀鳍中等的, 它的基底长度超过或等于脂鳍的基底.(参考文献 47263) 脂鳍小的, 它的基底短于背鳍基底的长度的长度.(参考文献 47263) 保存的标本是上方深褐色的侧线与颜色淡的在;之下 有时有一条黑色的条纹在鳃盖后面.(参考文献 47263) 背部与尾鳍可能显示极小的黑色边缘。 (参考文献 47263)
系统发育多样性指数 (参考文献 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00458 - 0.02392), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
营养阶层 (参考文献 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回复力 (参考文献 120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
渔业脆弱性 (Ref. 59153): Low vulnerability (10 of 100). 🛈