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Characiformes (Characins) >
Characidae (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
Ecología
; agua dulce bentopelágico; rango de profundidad 4 - 20 m (Ref. 126103). Subtropical; 21°S - 35°S
Distribución
Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri
South America: southeastern Brazil and the La Plata basin.
Tamaño / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 32.0 cm TL macho / no sexado; (Ref. 111130)
Short description
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 11; Espinas anales: 3; Radios blandos anales: 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).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Géry, J., 1977. Characoids of the world. Neptune City ; Reigate : T.F.H. [etc.]; 672 p. : ill. (chiefly col.) ; 23 cm. (Ref. 598)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Pesquerías: sin interés
Herramientas
Special reports
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Fuentes de Internet
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).
Nivel trófico (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.
Resiliencia (Ref.
120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (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);
