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> Siluriformes (Catfishes) > Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Auchenipterus: Greek, auchen = neck + Greek, pteryx = fin (Ref. 45335).
More on authors: Spix & Agassiz.

Issue
Redescribed in Ferraris & Vari (1999).

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce pelágico(a,os,as); pH range: 6.7 - 7.2; dH range: 7 - 16. Tropical; 20°C - 22°C (Ref. 2060)

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South America: Lower Amazon and Tocantins rivers northward to Marowijne River. Possibly also Rupununi River in Guyana and Negro River in Brazil.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 27.0 cm SL macho/indeterminado; (Ref. 26147)

Inhabits lower courses of the larger rivers. Free swimming species found near the surface. Nocturnal, plus active during dusk and dawn. Feeds on smaller fish. The male is recognizable by his thick, ossified maxillary barbels and by the first few rays of the anal fin which are fused, supporting the urogenyla tube that runs along the anterior border to the tip of the rays (Ref. 6868). This fish comprises the majority of the catches in the fish nets and is especially captured during the rainy season which is its reproductive period. Occurs less frequently in flood zones, prefers eroded zones where it appears in large numbers (Ref. 27188).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador : Ferraris, Jr., Carl J. | Colaboradores

Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37098)

Status na Lista Vermelha da UICN (Ref. 130435)

Segura ou pouco preocupante (LC) ; Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

Harmless

Uso pelos humanos

Pescarias: pouco comercial; Aquário: Espécies comerciais

FAO - Publication: search | FishSource |

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Estimates based on models

Índice de diversidade filogenética (Ref. 82804): PD₅₀ = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00776 (0.00483 - 0.01247), b=3.02 (2.88 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Nível Trófico (Ref. 69278): 3.6 ±0.51 se; based on food items.

Generation time: 1.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.

Resiliência (Ref. 120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (K=0.65).

Fishing Vulnerability (Ref. 59153): Low vulnerability (23 of 100).

Categoria de preço (Ref. 80766): Unknown.

Auchenipterus nuchalis (Spix & Agassiz, 1829)