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> Siluriformes (Catfishes) > Anchariidae (Vaonas)
Etymology: Gogo: Gogo is the Malagasy word most commonly used to refer to members of Anchariidae.; arcuatus: The specific epithet come from the Latin arcuatus, meaning bent like a bow, in reference to the concave shape of the dorsoposterior margin of the dorsal fin (Ref. 56142).

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

; eau douce démersal. Tropical

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Africa: Sandrananta River drainage in southeastern highlands of Madagascar (Ref. 56142).

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 18.1 cm SL mâle / non sexé; (Ref. 56142)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 7; Épines anales: 0; Rayons mous anaux: 12; Vertèbres: 43. Diagnosis: Gogo arcuatus is distinguished from other members of Anchariidae by the following unique characters: a larger eye, 17.7-18.0% of head length vs. 9.2-15.9%; mottled brownish-gray colouration vs. highly mottled dark gray and cream, solid purplish-gray or lead gray; and a concave dorsoposterior margin of the dorsal fin vs. straight (Ref. 56142). It can be further distinguished from G. brevibarbis in having unicuspid teeth vs. bicuspid (Ref. 56142).

Gogo arcuatus is found in pools surrounded by large, exposed boulders from a clear, shallow, forested stretch of the river, where the substrate is very rocky and the current swift (Ref. 56142).

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Référence principale Upload your references | Références | Coordinateur | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Données manquantes (DD) ; Date assessed: 01 July 2016

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.4 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (12 of 100).

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Gogo arcuatus Ng & Sparks, 2005