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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
More on author: Eigenmann.
Taxonomic Remarks
Several morphologically similar populations from Colombia to Uruguay may be referable to this species. This species used to be incorrected listed as Characidium fasciatum (see discussion in Buckup, 1992:1071)
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
South America: Amazon and Essequibo River basins; and coastal basins of Guiana Shield.
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 7.4 cm SL hane/ej könsbestämd; (Ref. 101566)
Lives in groups in the upper reaches of rivers. Common in rapidly flowing water over a sandy or rocky substrate (Ref. 27188). Feeds mainly on insects which they dig from the substrate or pick from the rocks (Ref. 12225). Highly mimetic, the intensity of the black bands depends on the color of the substrate (Ref. 27188).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Buckup, P.A., 2003. Crenuchidae (South American darters). p. 87-95. 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. 37059)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00761 - 0.01254), b=3.06 (3.00 - 3.12), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.5 ±0.3 se; based on diet studies.
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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