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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch; diepte 0 - 1 m (Ref. 55781). Subtropical
South America: Rio Uruguay basin in Argentina.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 9.0 cm SL mannelijk / geslacht onbekend; (Ref. 128951)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Differs from other species of the genus by the following combination of characters: 17-21 branched anal fin rays, predorsal length (52.5-55.4% SL), preventral length (47.8-51.0% SL), preanal length (63.0-68.8% SL), caudal peduncle length (12.3-14.3% SL) and eye diameter (33.1-37.0% HL). Further differs by having seven to ten dentary teeth decreasing in size gradually, inner premaxillary teeth wider distally; one vertically elongated black humeral spot, separated from a second posterior one by 3 or 4 scales; narrow lateral band becoming wider below middle of dorsal fin base (Ref. 55781).
Occurs in rapids and small falls with clear flowing water, pools and some areas with slow current (Ref. 55781). The depth of the streams ranges from 0.40 to 1.3 m and the bottom is composed of sand and mostly stones (Ref. 55781).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Almirón, A.E., M. Azpelicueta and J.R. Casciotta, 2004. A new species of Bryconamericus from the arroyo Shangay, rio Uruguay basin, Argentina (Teleostei: Characiformes: Characidae). Zool. Abh. Staat. Mus. Tierk. Dresden 54:3-10. (Ref. 55781)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01072 (0.00565 - 0.02034), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
2.6 ±0.3 se; based on size and trophs of closest relatives |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |