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> Characiformes (Characins) > Characidae (Characins; tetras) > Stevardiinae
Etymology: Microgenys: Greek, mikros = small + greek, genys, -yos = face (Ref. 45335).
Eponymy: Dr Wolfgang Karl Weyrauch (1907–1970) was a German zoologist, malacologist, and ecologist who went to Peru (1938). [...] (Ref. 128868), visit book page.
More on author: Fowler.

Issue
Possibly a junior synonym of Bryconacidnus ellisi (Pearson, 1924), as suggested by Géry (1977:398).

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser benthopelagisch. Tropical

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South America: Amazon River basin.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 2.8 cm SL Männchen/unbestimmt; (Ref. 38376)

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. …, 2003. Genera Incertae Sedis in Characidae. p. 106-168. 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. 38376)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

Daten mangelhaft (DD) ; Date assessed: 23 April 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00955 (0.00443 - 0.02057), b=3.06 (2.88 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Microgenys weyrauchi Fowler, 1945