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Gogo ornatus Ng & Sparks, 2005

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Description: Dorsal spines (total): 2; Dorsal soft rays (total): 6-7; Anal spines: 0; Anal soft rays: 12; Vertebrae: 43 - 46. 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. 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. Habitat: Gogo ornatus is only known from the Mangoro River drainage on the east coast of Madagascar. It is found in a clear, clean, and well oxygenated river with a substrate composed of sand and gravel, with large scattered boulders. Etymology: The specific name ornatus: Ornate; decorated. Remarks: The estimated Extent of Occurrence is less than 5,000 km² and it is known from only a single location. Continuing habitat loss/decline due to deforestation of the catchment, and declines due to competition/predation from introduced exotic fish species are suspected. This anchariid catfish is therefore listed as endangered. Deforestation leading to loss of habitat through increased sedimentation and predation/competition from exotic invasive species are possible threats to this species (IUCN).

Common Name:

None

Synonyms:

Ancharius brevibarbis

Family:

Anchariidae

Distribution:

Africa: Mangoro River drainage on east coast of Madagascar. Type Locality: Mangoro River, 200 meters upstream of ferry crossing on road to Marolambo, Toamasina Province, Madagascar.

Size:

21.0cm. (8¼ins)

Temp:

p.H.

Reference:

FishBase team RMCA & Sparks, J.S. 2016. Gogo ornatus. The IUCN Red List of Threatened Species 2016.
Froese, R. and D. Pauly. Editors. 2019. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 08/2019 ).
IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: www.iucnredlist.org.
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.

Family: Anchariidae Back to Ident-A-Cat Click on Thumbnails

Gogo ornatus

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