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Siluriformes (Catfishes) >
Anchariidae (Vaonas)
Etymology: Gogo: Gogo is the Malagasy word most commonly used to refer to members of Anchariidae; ornatus: The specific epithet comes from the Latin ornatus, meaning in splendid dress, in reference to its colouration (Ref. 56142).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Temperate
Africa: Mangoro River drainage on east coast of Madagascar (Ref. 56142).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 21.2 cm SL mâle / non sexé; (Ref. 56142)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 6 - 7; Épines anales: 0; Rayons mous anaux: 12; Vertèbres: 43 - 46. Diagnosis: Gogo ornatus is distinguished from other members of Anchariidae by a highly mottled pigmentation pattern consisting of contrasting light and dark patches vs. uniform colouration with or without isolated small scattered dark spots or subtle mottled brownish-gray colouration (Ref. 56142). It can be further distinguished from Gogo brevibarbis in having unicuspid teeth on the upper and lower jaws vs. bicuspid; and a smaller eye, 9.2-13.6% of head length vs. 15.9% (Ref. 56142). It can be distinguished from Gogo arcuatus in having a smaller eye, 9.2-13.6% of head length vs. 17.7-18.0%; and a straight dorsoposterior margin of the dorsal fin vs. concave (Ref. 56142).
Body shape (shape guide): fusiform / normal.
Found in a clear, clean, and well oxygenated river with a substrate composed of sand and gravel, with large scattered boulders (Ref. 56142).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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 (Réf. 69278) |
3.4 ±0.5 se; based on size and trophs of closest relatives |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (16 of 100). 🛈 |