Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335); macarenae: Named for the Macarena Mountain range of Colombia, where the type series was collected..
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique; pH range: 6.1 - 7.1. Tropical
South America: Güejar River basin, Macarene Mountain range, Orinoco system in Meta, Colombia.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 4.7 cm SL mâle / non sexé; (Ref. 86277)
Description synthétique
Morphologie | Morphométrie
Rayons mous dorsaux (Total): 10-11; Vertèbres: 36 - 37. Distinguished from congeners by having the following characters: incomplete lateral line, except Bryconamericus delta; anal fin with four or fewer unbranched rays; a short and thickened extrascapular bone which lacks or has only a reduced apophysis on its posterior tip, and only a few perforations by the latero-sensory canal; and live coloration. Differs from those that occur in the same basin: from Bryconamericus alpha by having 5 or 6 lateral teeth on the dentary (vs. 4), from Bryconamericus cristiani by the arrangement of the teeth in the outer premaxillary row in straight line (vs. zigzag), from Bryconamericus cismontanus and Bryconamericus loisae by its anal fin with 19-25 branched rays (vs. 13-18 and 26-30, respectively) (Ref. 86277).
Found along shore over sandy substrates in the mainstream of rivers, as well as tributaries with flow. The water is tea-colored with transparency usually moderate to high, pH usually around neutral (6.07-7.06), and high oxygen concentration (5.7 mg/l- 7.1 mg/l) as well as oxygen saturation (50.5% - 90.5%). Occurs sympatrically with Bryconamericus alpha, Bryconamericus cismontanus and Bryconamericus loisae (Ref. 86277).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Román-Valencia, C., C.A. Garcia-Alzate, R.I. Ruiz-C. and D.C. Taphorn, 2010. Bryconamericus macarenae n. sp. (Characiformes, Characidae) from the Güejar River, Macarena mountain range, Colombia. Animal Biodiversity and Conservation 33(2):195-203. (Ref. 86277)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00372 - 0.01775), b=3.09 (2.90 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
