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  • Clarias anfractus
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Scientific Name Clarias anfractus  Ng, 1999
Common Name
Type Locality Danum valley, forest stream 600 meters into conservation area, tributary of Sungai Segama, Sabah, Borneo, eastern Malaysia.
Pronunciation klar ee ass - ann FRAK tuss
Etymology Clarias: From the Greek chlaros, meaning lively; in reference to the ability of the fish to live for long periods out of water. From the Latin anfractus, meaning twisted, in reference to the pectoral spine morphology.
Hop to next section Species Information
Size 176mm or 6.9" SL. Find near, nearer or same sized spp.
Identification Clarias species are characterized by having an elongated body; a soft rayed dorsal fin extending to, or nearly to, the caudal fin base; a soft rayed anal fin extending from just behind the anus to the caudal fin base; pectoral fins each with a serrated anterior bony spine; head depressed, covered largely by firmly sutured, surface sculptured bony plates forming a protective helmet; four pairs of flagellate barbels (nasals, maxillaries, inner and outer mandibulars); air breathing organs derived from the 2nd and 4th epibranchials within a superbranchial chamber.

Distinguished from congeners in pectoral spine with an irregular outline, pear shaped genital papilla in males and relatively large white spots on the sides of the body.
Sexing Males have a white, pear shaped genital papilla, females have a genital papilla in the shape of a rounded cone.
Hop to next section Habitat Information
Distribution Asia: Borneo, Malaysia.
Pacific, Greater Sunda Island Rivers, Borneo Waters, East Borneo Waters, Segama (click on these areas to find other species found there)
Pacific, Greater Sunda Island Rivers, Borneo Waters, Kalabakan (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2018.
pH 6.0 - 7.8
Temperature 20.0-27.0°C or 68-80.6°F (Show species within this range)
Hop to next section Husbandry Information
Feeding Anything; this fish is totally omnivorous and will gorge itself on most offerings. User data.
Furniture Very well rooted plants and large structures that provide some shade. Appropriately sized clay pipes seem to provide a readily accepted, if less cosmetically pleasing, hideaway for these fish.
Compatibility Keep with large robust fish; anything small enough will be eaten.
Suggested Tankmates Large cyprinids (silver sharks, tinfoil or spanner barbs for example) or Central American cichlids.
Breeding Not reported.
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference The Raffles Bulletin of Zoology v. 47 (no. 1), pp18, Figs. 1a, 2a, 3a, 4a.
Registered Keepers There is no registered keeper.
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Last Update 2020 Sep 20 02:04 (species record created: 2006 Dec 24 12:58)