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Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); hendersoni: Named for Peter A. Henderson, British fish biologist, and doctoral co-advisor of WGRC, for his
contributions to Amazonian aquatic ecology..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico; pH range: 5.3 - 6.7. Tropical; 29°C - 33°C (Ref. 116763)
South America: central Amazon and lower Negro in Brazil; and Essequibo drainage in Guyana.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 19.5 cm TL macho/indeterminado; (Ref. 116763); 20.3 cm TL (female)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios anais : 192 - 210. Brachyhypopomus hendersoni is distinguished from other species of the genus Brachyhypopomus by the following combination of characters: caudal filament length 32.3-64.5% length to end of anal fin (vs. 7.4-31.6% in B. alberti, B. arrayae, B. batesi, B. belindae, B. benjamini, B. bennetti, B. bombilla, B. hamiltoni, B. occidentalis, B. palenque, B. provenzanoi, B. regani, B. sullivani, and B. verdii); 15-17 precaudal vertebrae (vs. 18-25 in B. beebei, B. brevirostris, B. draco, B. flavipomus, B. gauderio, B. janeiroensis, B. jureiae, and B. pinnicaudatus); head width at occiput 39.2-47.8% HL (vs. 49.5-70.4% in B. bullocki, B. diazi, and B. menezesi); and dorsal rami of the recurrent branch of the anterior lateral line nerve not visible (vs. visible in B. cunia and B. walteri) (Ref. 116763).
Facultative air-breathing in the genus (Ref. 126274); In the type locality region, this species occurs usually in marginal emergent plants (mainly wild rice, Oryza spp.), rafts of floating macrophytes (including grasses, e.g., Paspalum, and water hyacinths, Eichhornia spp.), and decaying plant matter along the edges of low-conductivity blackwater floodplain ria lakes (e.g., lago Tefé, lago Amanã, and lago Caiambé), and along river and oxbow lake margins. Feeds on aquatic insect larvae (primarily Chironomidae), and other
small aquatic invertebrates in the type locality. Spawns in floating macrophytes during the rising and high water period (Ref. 116763).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
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)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (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).
Nível Trófico (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
