分类 / Names
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Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); orientale: From the Latin orientalis, meaning of the East, in reference to the distribution of the species which is located eastward from C. occidentale..
More on authors: Buckup & Reis.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 亞熱帶的
South America: coastal basins of southern Brazil at western tributaries of Laguna dos Patos basin.
南美洲: 在 Laguna dos Patos 流域的支流西部的巴西南部的海岸流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 116915)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11 - 12; 臀鳍软条: 8 - 9. Dark spots on dorsal fin do not form a continuous band across rays; anal fin of males with small spots, without larger blotches on the anterior portion. Fourth or fifth ray of pectoral fin longest, not reaching or just reaching to pelvic-fin origin. Third fin ray of pelvic fin longest, reaching area between anal opening and anal fin origin or reaching anal fin origin (Ref. 27672).
在背鳍上的深色的斑点不形成一个横过鳍条的连续的条纹; 臀鳍雄性有小的斑点, 没有较大的斑块在前部上。 胸鳍的第四或第五鳍条长的, 不达到或正好延伸到腹鳍起点。 腹鳍的第三鳍鳍条长的, 达到在肛门开口与臀鳍起源之间的区域或者达成臀鳍起源.(参考文献 27672)
Most specimens examined were collected in small rivers or creeks with slow to moderate water current and mud, sand, and loose stones on the bottom (Ref. 27672).
调查的大多数的标本在底部上在小的河或小溪被缓慢到中等的水流与泥，沙子与松散的石头收集。 (参考文献 27672)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 在 Laguna dos Patos 流域的支流西部的巴西南部的海岸流域。
Buckup, P.A. and R.E. Reis, 1997. Characidiin genus Characidium (Teleostei, Characiformes) in Southern Brazil, with description of three new species. Copeia 1997(3):531-548. (Ref. 27672)
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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=0.01023 (0.00539 - 0.01942), b=3.08 (2.92 - 3.24), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
