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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique; profondeur 0 - 1 m (Ref. 55781). Subtropical
South America: Rio Uruguay basin in Argentina.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 9.0 cm SL mâle / non sexé; (Ref. 128951)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
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).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menacé (EN) (B2ab(iii)); Date assessed: 19 November 2020
Menace pour l'homme
Harmless
Utilisations par l'homme
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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). |
Niveau trophique (Réf. 69278) |
2.6 ±0.3 se; based on size and trophs of closest relatives |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |