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Teleostei (teleosts) > 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).

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

Freshwater; demersal. Temperate

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Africa: Mangoro River drainage on east coast of Madagascar (Ref. 56142).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 21.2 cm SL male/unsexed; (Ref. 56142)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 2; Dorsal soft rays (total): 6 - 7; Anal spines: 0; Anal soft rays: 12; Vertebrae: 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).

Found in a clear, clean, and well oxygenated river with a substrate composed of sand and gravel, with large scattered boulders (Ref. 56142).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Endangered (EN) (B1ab(iii)); Date assessed: 02 July 2016

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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).

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

Fishing Vulnerability (Ref. 59153): Low vulnerability (16 of 100).

Gogo ornatus Ng & Sparks, 2005