分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); clavulus: The specific name is derived from the Latin clavus (nail), referring to the conical tubercles on the head and body of this species.
More on authors: Ng & Freyhof.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 热带
Asia: Cai and Duc My River drainages in central Viet Nam.
亚洲: 在中央的越南 Cai 与 Duc 我的河流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 52824)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 1; 背的软条 (总数) : 5; 脊椎骨: 32 - 34. Mouth subterminal; anterior and posterior nostrils separated by distance greater than length of nasal-barbel base; emarginate caudal fin; 3-5 serrae on posterior edge of pectoral spine; evenly-sloping ethmoidal region, sides of head gently curving; 1+ 5-6 gill rakers on first branchial arch; conical-shaped tubercles on head and body; lightly contrasting color pattern, and tubercles arranged in prominent longitudinal rows on ventral third of body (Ref. 52824).
嘴接近端位的; 被距离鼻骨-触须基底的大于长度分开的前面与后面的鼻孔; 边缘微凹的尾鳍; 在胸棘的后缘上的 3-5个锯齿; 均匀地-倾斜的筛骨区域, 头侧逐渐弯曲的; 在第一个鳃弓上的 1+5-6 鳃耙; 在头部与身体上的锥形-形状的小瘤; 轻轻的对比彩色斑纹 , 与小瘤在腹面身体中的第三上排列成突出的纵列了。 (参考文献 52824)
Found in hilly landscape streams and small rivers with a width of about 15-30 m (Ref. 52824). Occurs only in shallow riffles, hiding under coarse gravel and larger single stones (Ref. 52824).
发现于多丘陵的风景溪流了，而且小的河具有一个大约 15-30 公尺的宽度。 (参考文献 52824) 生存只在浅滩急流中, 在粗砾石与比较大的单一石头下面藏.(参考文献 52824)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
亚洲: 在中央的越南 Cai 与 Duc 我的河流域。
Ng, H.H. and J. Freyhof, 2003. Akysis clavulus, a new species of catfish (Teleostei: Akysidae) from central Vietnam. Ichthyol. Explor. Freshwat. 14(4):311-316. (Ref. 52824)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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Estimates based on models
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).
营养阶层 (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
