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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk; djupintervall 0 - 1 m (Ref. 55781). Subtropical
South America: Rio Uruguay basin in Argentina.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 9.0 cm SL hane/ej könsbestämd; (Ref. 128951)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
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).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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 på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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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=0.01047 (0.00554 - 0.01979), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.6 ±0.3 se; based on size and trophs of closest relatives
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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