Classificação / Names
Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa
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Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Brachyrhamdia: Greek, brachys, -eia = shor + Brazilian vernacular name, Nhamdia/Jamdia (Ref. 45335); thayeria: Name refers to Thayeria Eigenmann (1908), a genus of South American characin that has a similar diagonal dark stripe on the caudal peduncle. Also named for Nathaniel Thayer Jr., a North American businessman and philanthropist (Ref. 094149).
Eponymy: Nathaniel Thayer Jr (1808–1883) was an American philanthropist and financier. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / intervalo de profundidade / distribution range
Ecologia
; Água doce demersal. Tropical
South America: Brazil.
Tamanho / Peso / Idade
Maturidade: Lm ? range ? - ? cm
Max length : 5.4 cm SL macho/indeterminado; (Ref. 94149)
Descrição breve
Chaves de identificação | Morfologia | Morfometria
This species can be distinguised from all its congeners by a dark brown stripe at caudal region extending transversely from region immediately below middle of adipose-fin base to the base of the ventral caudal-fin lobe. Differs from B. rambarrani by the having the supraoccipital process nearly triangular (vs. roughly rectangular). Also differs from B. heteropleura, B. marthae, and B. meesi by the following set of characters: 35-36 vetebrae (vs. 37-39), and absence of dark lateral band along the trunk (vs. distinct stripe in B. marthae and B. meesi, and faint stripe in B. heteropleura) (Ref. 94149).
Cross section: oval.
Prefers small streams not prone to flooding and is associated with marginal vegetation or along sandy beaches in shallow streams (ca. 1 m depth), with sandy or silt bottom substrate (Ref. 94149).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Slobodian, V. and F.A. Bockmann, 2013. A new Brachyrhamdia (Siluriformes: Heptapteridae) from Rio Japurá basin, Brazil, with comments on its phylogenetic affinities, biogeography and mimicry in the genus. Zootaxa 3717(1):001-022. (Ref. 94149)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-1)
Ameaça para o homem
Harmless
Utilização humana
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00374 - 0.01688), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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