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Siluriformes (Catfishes) >
Pseudopimelodidae (Bumblebee catfishes, dwarf marbled catfishes) > Pseudopimelodinae
Etymology: Rhyacoglanis: From the Greek words 'rhyax' (torrent) and 'glanis' (catfish), indicating a catfish inhabiting running waters in reference to its habitat (Ref. 128485); varii: Name 'varii' in honor of ichthyologist Richard P. Vari (1949-2016) for his outstanding contributions to the systematics of Neotropical fishes.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce demersal. Tropical
South America: Brazil.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 6.9 cm SL macho/indeterminado; (Ref. 137787)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 2; Raios dorsais (total) : 6; Raios anais : 5 - 6. This species is distinguished from its congeners by the following set of characters: dark brown vertical bar below the dorsal-fin base not confluent with a dark brown bar below the adipose-fin base; abrupt thinning of the subdorsal dark brown bar ventrally; dark brown spots sparsely distributed on the body; solid dark brown bar on caudal peduncle; posterior tip of the post-cleithral process reaching vertical through the base of the dorsal-fin spine; long distance of anus to anal-fin origin (mean = 11.4±0.8%), maxillary barbel length (mean = 79.6±5.8%), and caudal peduncle depth (mean = 9.5±0.5%); minor posterior nostril to eye distance (mean = 4.8±0.9%), body depth (mean = 18.2±1.5%), and postcleithral process length (mean = 12.9±1.1%); anterior serrae distributed along the entire margin (Ref. 137787).
Cross section: oval.
This species inhabits shallow, running water with substrate composed of pebbles, rocks, sand, and organic litter from the surrounding marginal vegetation (Ref. 137787).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Shibatta, O.A. and L. Souza-Shibatta, 2023. New species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from
the upper rio Tocantins basin. Neotrop. Ichthyol. 21(1):e220075. (Ref. 137787)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: sem interesse
Ferramentas
Relatórios especiais
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Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00550 (0.00229 - 0.01319), b=3.11 (2.90 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nível Trófico (Ref. 69278) |
3.4 ±0.5 se; based on size and trophs of closest relatives |
Vulnerabilidade da pesca (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |