Classificação / Names
Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Pseudancistrus: Greek, pseudes = false + Greek, agkistron = hook (Ref. 45335); kayabi: The specific name is in reference to the Kayabi indigenous people that inhabited the region of the rivers Arinos, dos Peixes and Teles Pires, in Mato Grosso State, Brazil. A noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal. Tropical
South America: Rio Teles Pires, rio Tapajós basin in Mato Grosso State, Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 8.8 cm SL macho/indeterminado; (Ref. 99871)
Descrição breve
Morfologia | Morfometria
Espinhos dorsais (total): 1; Raios dorsais moles (total): 7; Espinhos anais 1; Raios anais moles: 5. Pseudancistrus kayabi is distinguished from all congeners except P. reus by having dark bars in caudal and dorsal fins (vs. with white spots in caudal and dorsal fins). It can be further diagnosed from all Pseudancistrus except P. nigrescens by having a dark brown body with whitish spots that fade along the posterior portion of the dorsal fin and forming mottled pattern (vs. either dark brown with conspicuous rounded spots not covering more than one plate in P. barbatus, P. corantijniensis, P. depressus, P. asurini, and P. zawadzkii or with dark brown bars in P. reus). It further differs from P. barbatus and P. depressus by having the snout with yellowish hypertrophied odontodes (vs. reddish-brown odontodes). Other characters useful for the identification of P. kayabi include the following: shorter pectoral spine, 22-30% SL (vs. 29-34% in P. nigrescens, 31-33% in P. zawadzkii, and 30-34% in P. barbatus); shorter dorsal-fin base, 20-28% SL (vs. 28-29% in P. nigrescens, 29-31% in P. zawadzkii, and 28-31% in P. barbatus); greater internares width, 13-19% HL (vs. 10.5-12.9% in P. nigrescens); head depth, 60-66% HL, greater than in P. nigrescens (56-57%) and in P. barbatus (41-53%) but smaller than in P. zawadzkii (67-73%); and a greater adipose-anal distance (17-25% SL vs. 15-17% in P. nigrescens and 12-15% in P. barbatus) (Ref. 99871).
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Silva, G.S.C., F.F. Roxo and C. Oliveira, 2015. Two new species of Pseudancistrus (Siluriformes: Loricariidae) from the Amazon basin, northern Brazil. ZooKeys 482:21-34. (Ref. 99871)
Categoria na Lista Vermelha da IUCN (Ref. 130435)
Ameaça para o homem
Harmless
Utilização humana
Mais informação
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Fontes da internet
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=0.01514 (0.00712 - 0.03216), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
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).
