Classification / Names
Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
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Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); provenzanoi: Named for Francisco Provenzano Rizzi, Venezuelan ichthyologist, for his contributions to Neotropical ichthyology. A noun in the genitive case..
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique; pH range: 3.1 - 4.0. Tropical; 26°C - 28°C (Ref. 116763)
South America: upper Orinoco and upper Negro (Amazonas drainage) in Venezuela.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 9.4 cm TL mâle / non sexé; (Ref. 116763); 11.0 cm TL (female)
Description synthétique
Morphologie | Morphométrie
Rayons mous anaux: 162 - 195. Brachyhypopomus provenzanoi is distinguished from other species of the genus Brachyhypopomus by the absence of scales in middorsal region of anterior third of body (vs. presence in all congeners except B. benjamini) and by its dorsal surface of body with irregular pattern of distinct dark blotches on depigmented tan-colored background (vs. speckled with small brown chromatophores on light brown background in B. benjamini) (Ref. 116763)
Facultative air-breathing in the genus (Ref. 126274); Found in small, gently flowing, low-conductivity clearwater terra firme forest and savanna streams, and in static leaf-litter choked blackwater streams and swamps in Mauritia palm swamps. Most specimens in streams were observed sheltering in submerged and marginal aquatic vegetation growing in sandy beds, and those in Mauritia palm swamps were collected from dense leaf litter banks and root mats. Sympatric and syntopic with Brachyhypopomus bullocki, B. brevirostris, and B. sullivani in the type locality region. Food items food in the stomach contents were aquatic insect larvae and other small aquatic invertebrates (Ref. 116763).
Life cycle and mating behavior
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)
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
Noms communsSynonymesMétabolismePrédateursÉcotoxicologieReproductionMaturitéFraiRassemblement de ponteFéconditéŒufsDéveloppement de l'œuf
Taille/ÂgeCroissanceLongueur-poidsLongueur-longueurFréquences de longueursMorphométrieMorphologieLarvesDynamique des populations larvairesRecrutementAbondanceBRUVS
RéférencesAquacultureProfil d'aquacultureSouchesGénétiqueElectrophoresesHéritabilitéPathologiesTraitementNutrientsMass conversion
CollaborateursImagesStamps, Coins Misc.SonsCiguateraVitesseType de nageSurface branchialeOtolithesCerveauxVision
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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=0.00380 (0.00145 - 0.00994), 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 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
