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Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); menezesi: Named for Naércio Aquino Menezes, Brazilian ichthyologist, for his important contributions to
Neotropical fish systematics.
Eponymy: Professor Dr Naércio Aquino Menezes (d: 1937) is a Brazilian zoologist who is Professor, Department of Zoology, Institute of Biosciences, University of São Paulo and at Museu de Zoologia da Universidade de São Paulo. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique. Tropical
South America: middle and upper rio São Francisco drainage in Brazil.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 11.9 cm TL mâle / non sexé; (Ref. 116763); 11.2 cm TL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Brachyhypopomus menezesi is distinguished from other species of the genus Brachyhypopomus by the following combination of characters: presence of accessory electric organ over the opercular region (vs. absence in all congeners except B. bombilla and B. regani); dorsal surface with large dark blotches against a lighter background (vs. dorsal surface speckled with small brown chromatophores on a pale background in B. bombilla); and caudal filament length 24.7-33.3% of length to end of anal fin (vs. 11.1-17.9% in B. regain) (Ref. 116763).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Occurs in small rivers, streams, and lakes based on geographical coordinates and labels accompanying the examined museum specimens. Stomach contents of a single specimen consisted of aquatic insect larvae, mostly Chironomidae (Ref. 116763).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Crampton, W.G.R., C.D. de Santana, J.C. Waddell and N.R. Lovejoy, 2017. A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species. Neotrop. ichthyol. 14(4):e150146. (Ref. 116763)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00141 - 0.00980), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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