Clarias batu Lim & Ng, 1999
photo by Ng, H.H.

Family:  Clariidae (Airbreathing catfishes)
Max. size:  30.5 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: endemic to Pulau Tioman, Malaysia.
Diagnosis:  Dorsal soft rays (total): 67-75; Anal soft rays: 61-70; Vertebrae: 67-71. Possess the following unique combination of character states: body slender, body depth at anus 9.0-11.4% in SL; distance of occipital process to dorsal fin origin 9.9-11.8% in SL; dorsal and anal fins separate from caudal fin.
Biology:  Found in freshwater sections of torrent streams, in clear, cool, fast flowing water over a substrate of sand, rocks and large granite boulders. Largely carnivorous, subsisting on small fish, crustaceans and insects. Seems to be nocturnal, emerging into the open at night. Also Ref. 84801.
IUCN Red List Status: Critically Endangered (CR); Date assessed: 17 January 2019 (B1ab(ii,iii,v)) Ref. (130435)
Threat to humans:  harmless


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