分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Deuterodon: Greek, deuter = second + Greek, odous = teeth (Ref. 45335); pelecus: From the Greek pelekus, meaning axe, in allusion to the form of the dark pigmentation resulting from the junction of the humeral spot with the black midlateral stripe.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; 深度上下限 0 - 1 m (Ref. 57404). 热带
South America: Rio Pardo drainage in Bahia, Brazil.
南美洲: 在 Bahia 巴西的 Rio Pardo 流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 57404)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 35. Distinguished from its congeners by the following combination of characters: body depth 26.7-34.8% SL, short but pointed snout, that is smaller than the orbital diameter, and anal fin with 16-18 branches rays. Differs from other members of the genus in its distinctive color pattern: with only one humeral spot limited to the region above lateral line series, and has a conspicuous midlateral body stripe extending from the upper margin of opercle to the caudal-fin base, a putative autapomorphy of this species (Ref. 57404).
与它的同类区分了藉由跟随组合特征: 体高 26.7-34.8% SL, 短但是尖的吻, ，那是比眼窝的直径 , 与臀鳍有 16-18个分支鳍条更小。 在它的特殊彩色斑纹中有别于其他本属的成员: 只有被仅限于区域在侧线上面系列, 而且有一个把鳃盖的从上缘延伸到尾鳍基底的显著的侧面中央的身体斑纹，这种的想象 autapomorphy 的一个肩部的斑点。 (参考文献 57404)
描述: D. ii, 9; A. iii-v, 16-18; P. i, 11-13; V. i, 7.(参考文献 57404)
The type locality during dry season is about 10-20 m wide large river, with clear water, 0.1-1.0 m deep, alternating lentic stretches and rapids, with riparian vegetation including grasses and with bottom consisting of stones, rocks, sand and mud (Ref. 57404).
在干季的时候模式标本产地是大约 10-20 公尺宽大的河, ，水质清澈的地方, 0.1-1.0 公尺深, 交互的静水支流与急流, 藉由包括草的河岸的植物与具有底部包含石头，岩石，沙子与泥.(参考文献 57404)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在 Bahia 巴西的 Rio Pardo 流域。
Terán, G.E., M.F. Benitez and J.M. Mirande, 2020. Opening the Trojan house: phylogeny of Astyanax, two genera and resurrection of Psalidodon (Teleostei: Characidae). Zool. J. Lin. Soc. 190(4):1217-1234. (Ref. 123753)
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=0.01096 (0.00498 - 0.02415), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 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).
