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Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: diamantina: The specific name diamantina is in reference to the type region, the Chapada Diamantina.
Eponymy: Dr William J Moenkhaus (1871–1947) was an American geneticist and ichthyologist who became Professor of Physiology at Indiana University Medical School (1904–1941), where he was Eigenmann’s colleague. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: upper and middle course of rio Paraguaçu, Brazil which have several relatively small tributaries entering its margins.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.6 cm SL 雄鱼/尚未辨别雌雄; (Ref. 75036)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11; 臀鳍软条: 28 - 31. Diagnosed from all members of the genus Moenkhausia by the body color pattern, the presence of scales on the predorsal median line and the number of anal-fin rays. Distinguished from Moenkhausia levidorsa in having a regularly scaled predorsal line (vs. a naked predorsal line); and differs from other congeners, except for Moenkhausia oligolepis, Moenkhausia sanctaefilomenae, Moenkhausia pyrophthalma, Moenkhausia nigromarginata and Moenkhausia diktyota, by having a reticulated body pigmentation pattern. Differs further from all congeners with a reticulated body pigmentation pattern, except for Moenkhausia nigromarginata, by the absence of a conspicuous dark blotch in the caudal peduncle; further distinguished from Moenkhausia sanctaefilomenae and Moenkhausia oligolepis by its higher number of pored lateral line scales (32-34 vs. 22-24, 27-30, respectively); and differs from Moenkhausia diktyota in the extent of the poring of the lateral line (complete vs. incomplete). Can be differentiated from Moenkhausia nigromarginata by the absence of a black stripe on the anterior edge of dorsal, pelvic and anal fins, and absence of longitudinal stripes on the body positioned over the center of the scales (vs. presence of both pigmentation patterns) and the number of anal-fin rays (iv, 24-26; vs. ii-iv, 20-22) (Ref. 75036).
Inhabits blackwater rivers. The type locality (rio Toalhas) of this species has a sandy and rocky bottom, with little riparian and submerged vegetation (Ref. 75036).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Benine, R.C., R.M.C. Castro and A.C.A. Santos, 2007. A new Moenkhausia Eigenmann, 1903 (Ostariophysi: Characiformes) from Chapada Diamantina, rio Paraguaçu Basin, Bahia, Northeastern Brazil. Neotrop. Ichthyol. 5(3):259-262. (Ref. 75036)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
人类利用
渔业: 没有兴趣
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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=0.01230 (0.00522 - 0.02900), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
