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: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 亚热带的
South America: known from only one specimen from Laguna Tropa Vieja, Río de la Plata basin, Uruguay.
南美洲: 乌拉圭。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 9.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 99820)
简单描述
检索表 | 型态特徵 | 形态测量图
Oligosarcus platensis is distinguished from O. amome in having premaxillary teeth in the outer series tricuspidate (vs. pentacuspidate); premaxillary inner series with teeth bi to pentacuspidate (vs. penta to heptacuspidate) ; 17 maxillary teeth (uni to tricuspidate) (vs. ten to eleven maxillary teeth (uni to pentacuspidate)); dentary teeth uni to pentacuspidate (vs. uni to heptacuspidate); 27 branched anal-fin rays (vs. 20 to 23); 44 scales on lateral line (vs. 39 to 41); and 24 predorsal scales (vs. 14 to 16) (Ref. 99820).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 乌拉圭。
Almirón, A., J. Casciotta, L. Piálek, K. Doubnerová and O. Říčan, 2015. Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina. Zootaxa 3915(1):581-590. (Ref. 99820)
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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): 3.8 ±0.6 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).
