Acrochordonichthys gyrinus Vidthayanon & Ng, 2003
Falcate chameleon catfish
Acrochordonichthys gyrinus
photo by Panitvong, N.

Family:  Akysidae (Stream catfishes), subfamily: Parakysinae
Max. size:  10 cm TL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: known only from the type locality, the Yom River at Phitsanulok, part of the upper Chao Phraya basin in Thailand.
Diagnosis:  Dorsal spines (total): 2-2; Dorsal soft rays (total): 4-5; Anal spines: 0-0; Anal soft rays: 10-10; Vertebrae: 39-39. Concave posterior margin of the pectoral fin; head depth 9.8-11.4% SL; dorsal to adipose distance 7.4-8.6% SL; body depth at anus 8.3-10.5% SL; maximum width of humeral process 16.3% its length; and anterior margin of anal fin and posterior margin of adipose fin straight (Ref. 50585). Caudal fin emarginate (Ref. 50585).
Biology:  Inhabits mainstreams (Ref. 58784). Feeds on crustaceans and benthic organisms (Ref. 58784).
IUCN Red List Status: Data deficient (DD); Date assessed: 17 December 2010 Ref. (130435)
Threat to humans:  harmless


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