Akysis clavulus Ng & Freyhof, 2003
Akysis clavulus
photo by Ng, H.H.

Family:  Akysidae (Stream catfishes), subfamily: Akysinae
Max. size:  3.5 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Cai and Duc My River drainages in central Viet Nam.
Diagnosis:  Dorsal spines (total): 1-1; Dorsal soft rays (total): 5-5; Vertebrae: 32-34. 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 (Ref. 52824).
Biology:  Found in hilly landscape streams and small rivers with a width of about 15-30 m (Ref. 52824). Occurs only in shallow riffles, hiding under coarse gravel and larger single stones (Ref. 52824).
IUCN Red List Status: Data deficient (DD); Date assessed: 17 December 2010 Ref. (130435)
Threat to humans:  harmless
Country info:  Known only from Cai and Duc My rivers, which drain to the central Vietnamese coast and enter the sea in Nha Trang and Ninh Hoa, respectively (Ref. 52824).


Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.