Taxonomic Remarks
No recent work; see Eigenmann & Eigenmann (1889:105) for description and key of identification; Géry (1977: 103) for description in key.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten pelagiska; pH range: 5.6 - 7.8; dH range: ? - 30. Subtropical; 23°C - 27°C (Ref. 1672)
Central and South America: São Francisco, Amazon, Paraná, Orinoco and Magdalena River basins, and coastal rivers in Guyana, Suriname and French Guiana.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 16.5  range ? - ? cm
Max length : 28.5 cm SL hane/ej könsbestämd; (Ref. 121647); publicerad maxvikt: 520.00 g (Ref. 121647)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Opercular ocellus present.
Body shape (shape guide): elongated.
Obligate air-breathing (Ref. 126274); Inhabits swamps and creeks with little current (Ref. 12225), as well as in flooded savannas (Ref. 27188). Regularly goes to the surface of the water to breathe. Can survive long periods out of the water. This behavior of breathing air at the surface makes the fish vulnerable to predation by electric eels (Ref. 27188). Is a predaceous omnivore of open waters. Feeds on aquatic invertebrates and to lesser degree, on fish. Specimens measuring 16 cm were found to be mature (Ref. 12225).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Oyakawa, O.T., 2003. Erythrinidae (Trahiras). p. 238-240. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37025)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell; Akvarium: Offentliga akvarier
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01023 (0.00643 - 0.01629), b=3.14 (3.00 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.4 ±0.49 se; based on food items. |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (30 of 100). 🛈 |
Priskategori (Ref. 80766) |
Unknown.
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