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  • Akysis clavulus
Down arrow Cat-eLog Data Sheet
Scientific Name Akysis clavulus  Ng & Freyhof, 2003
Common Name
Type Locality Song Duc My about 10 kilometers west of Ninh Hoa, 12°32.22'N, 109°01.38'E, Khanh Hoa Province, Vietnam
Pronunciation ack EYE siss - clah voo luss
Etymology From the Greek a, meaning without and kystis, meaning bladder; in reference to the lack of a swimbladder. 
Down arrow Species Information
Size 35mm or 1.4" SL. Find near, nearer or same sized spp.
Identification Fishes of the genus Akysis are small species (typically not larger than 50mm SL) with tuberculate skin and a cryptic color pattern generally consisting of yellow patches or bands on a brown body. They have a distribution ranging from the Irrawaddy River drainage to the west, the Citarum River drainage to the east and south and the Lancanjiang (upper Mekong) drainage to the north.

Mouth subterminal; anterior and posterior nostrils separated by distance greater than length of nasal-barbel base; emarginate caudal fin; 3-5 serrae on posterior edge of pectoral spine; evenly-sloping ethmoidal region, sides of head gently curving; 1+ 5-6 gill rakers on first branchial arch; conical-shaped tubercles on head and body; lightly contrasting color pattern, and tubercles arranged in prominent longitudinal rows on ventral third of body.
Down arrow Habitat Information
Distribution Asia: Cai and Duc My River drainages in central Vietnam.
Vietnam waters, Cai (click on these areas to find other species found there)
Vietnam waters, Duc My (click on these areas to find other species found there)

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IUCN Red List Category Data Deficient, range map and more is available on the IUCN species page. Last assessed 2010.
Down arrow Husbandry Information
Furniture Rocks or driftwood to partially deflect the current and for the fish to hide in. Some vegetation or leaf litter also ideal.
Suggested Tankmates Ideal tankmates include balitorine loaches such as Homaloptera, fast-swimming cyprinids such as Danio or Barilius, and smaller mastacembelids.
Breeding Unreported.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Ichthyological Exploration of Freshwaters v. 14 (no. 4), pp 312, Figs. 1-2.
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Last Update 2019 Oct 07 12:51 (species record created: 2006 Jul 28 08:03)