分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Anostomidae (Headstanders)
Etymology: Schizodon: Greek, schizein = to divide + Greek, odous = teeth (Ref. 45335); scotorhabdotus: Specific name derived from the Greek scotos (dark), and rhabdos (rod or stick), in reference to the prominent dark lateral stripe of this species,.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Río Orinoco system in Venezuela and Colombia.
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 28 - ? cm
Max length : 27.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 75767)
简单描述
型态特徵 | 形态测量图
背的软条 (总数): 11-12; 臀鳍软条: 9; 脊椎骨: 40 - 42. Can be separated from all congeners, except Schizodon isognathus, Schizodon knerii, and Schizodon nasutus, by the presence of a dark stripe running along the lateral-line-scale row from the rear of the opercle to the caudal peduncle (vs. absence of midlateral stripe in Schizodon altoparanae, Schizodon australis, Schizodon borelli, Schizodon corti, Schizodon dissimilis, Schizodon fasciatus, Schizodon intermedius, Schizodon platae, and Schizodon rostratus), and midlateral stripe extending no further anteriorly than to vertical drawn through dorsal-fin origin in Schizodon jacuiensis and Schizodon vittatus). Differs from Schizodon nasutus by a terminal or slightly upturned mouth (vs. a strongly subterminal mouth). Can be differentiated from Schizodon isognathus and Schizodon knerii by having 4 or 4.5 transverse scale rows above the lateral line to the dorsal-fin origin (vs. 6.5 scale rows [rarely 5.5 in Schizodon knerii]), 4 or 4.5 transverse scale rows below the lateral line to the anal-fin origin (vs. 5.5 scale rows [rarely 4.5 in Schizodon knerii]) and seven branched anal-fin rays (vs. eight). Differs further from Schizodon isognathus by the presence of three or four vertical dark blotches on the lateral surfaces of the body intersecting the prominent lateral stripe (vs. vertical blotches absent) and a terminal mouth in adults (vs. a slightly subterminal mouth in adults); and Schizodon knerii by having only 16 circumpeduncular scales (vs. 18-20) (Ref. 75767).
Found in lagoons, pools, small caños and cattle pastures, all relatively lentic habitats (Ref. 75767). Herbivorous, preferring macrophytes (Ref. 75767). Distinct pairs breed on densely grown weedy places (Ref. 205).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Distinct pairs breed on densely grown weedy places (Ref. 205).
Sidlauskas, B.L., J.C. Garavello and J. Jellen, 2007. A new Schizodon (Characiformes: Anostomidae) from the Río Orinoco system, with a redescription of S. isognathus from the Río Paraguay System. Copeia 2007(3):711-725. (Ref. 75767)
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年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.5 ±0.2 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (23 of 100).