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> Siluriformes (Catfishes) > Anchariidae (Vaonas)
Etymology: griseus: The specific name comes from the Latin griseus, meaning gray, in reference to its colouration (Ref. 56142).

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

; Água doce demersal. Tropical

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: Onilahy River drainage, southcentral Madagascar (Ref. 56142).

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 24.4 cm SL macho/indeterminado; (Ref. 56142)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 2; Raios dorsais (total) : 6 - 7; Espinhos anais: 0; Raios anais : 15; Vértebras: 42 - 44. Diagnosis: Ancharius griseus is distinguished from A. fuscus in having a longer dorsal-fin spine, 22.9-24.3% of standard length vs. 14.6-22.6%; longer snout, 49.2-51.3% of head length vs. 40.1-45.8%; smaller eye, 9.3-10.1% of head length vs. 11.4-15.4%; and pectoral spine serrated posteriorly along only its distal half vs. entire length (Ref. 56142).

The river at the type locality runs through grassland/savannah and the habitat can be characterized as mildly disturbed; the water is clear, deep, and swift flowing, with area of calmer water, and the substrate mostly sandy to rocky (Ref. 56142).

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

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Ng, H.H. and J.S. Sparks, 2005. Revision of the endemic Malagasy catfish family Anchariidae (Teleostei: Siluriformes), with descriptions of a new genus and three new species. Ichthyol. Explor. Freshwat. 16(4):303-323. (Ref. 56142)

Status na Lista Vermelha da UICN (Ref. 130435)

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Ancharius griseus Ng & Sparks, 2005