分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (Characins; tetras) > Stethaprioninae
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335).
More on author: Cuvier.
Issue
See Menezes, 1987: 31 for diagnosis.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; 深度上下限 4 - 20 m (Ref. 126103). 亞熱帶的; 21°S - 35°S
South America: southeastern Brazil and the La Plata basin.
南美洲: 巴西東南方與 La Plata 流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 32.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 111130)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 11; 臀棘: 3; 臀鰭軟條: 26.
Occurs in ponds (Ref. 11229). Inhabits shallow, densely vegetated microhabitats in small streams or along the banks of larger rivers (Ref. 106564). Feeds mostly on fishes (Ref. 598). Two rodents (Sigmodontinae) were found in the stomachs of two individuals in different rivers located in the southern Brazilian Atlantic Rain Forest, in March and November 2010. These represent the first records of this species feeding on mammals (Ref. 106564).
出現於池塘。 (參考文獻 11229) 大部份捕食魚。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 巴西東南方與 La Plata 流域。
Géry, J., 1977. Characoids of the world. Neptune City ; Reigate : T.F.H. [etc.]; 672 p. : ill. (chiefly col.) ; 23 cm. (Ref. 598)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 04 March 2021
人類使用
漁業: 沒有興趣
工具
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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=0.00776 (0.00502 - 0.01201), b=3.03 (2.91 - 3.15), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.2 ±0.73 se; based on food items.
Generation time: 1.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (22 of 100).
Nutrients (Ref.
124155): Calcium = 68.1 [18.5, 168.3] mg/100g; Iron = 1.55 [0.81, 3.65] mg/100g; Protein = 19.2 [17.2, 21.4] %; Omega3 = 0.843 [0.346, 2.269] g/100g; Selenium = 33.5 [13.3, 74.1] μg/100g; VitaminA = 46.9 [15.2, 140.5] μg/100g; Zinc = 0.957 [0.665, 1.374] mg/100g (wet weight);
