Tor douronensis (Valenciennes, 1842)
Semah mahseer
photo by CAFS

Family:  Cyprinidae (Minnows or carps), subfamily: No subfamily
Max. size:  35 cm TL (male/unsexed)
Environment:  benthopelagic; pH range: 7.7 - 8.7
Distribution:  Asia: Thailand east to Viet Nam and south to Indonesia (Ref. 7050). Known from the Chao Phraya (Ref. 26336) and Mekong (Ref. 13848).
Diagnosis:  Dorsal spines (total): 4-4; Dorsal soft rays (total): 7-9; Anal spines: 3-3; Anal soft rays: 5-5. Distinguished from other species of the genus in the Lancangjiang River by the following combination of characters: body compressed; median lobe of lower lip short, free margin truncate, not extending to a line connecting inner corners of mouth; eyes visible in ventral view; isthmus with small distinct scales, more than 18 scales between isthmus and origin of pelvic fin; gill rakers 15-20; supero-posterior margin of dorsal fin deeply concave; tip of anal fin pointed; color in life silvery, back dark, fins dark gray (Ref 13848).
Biology:  Found in medium to large-sized rivers (Ref. 12975). Kept in ponds or cages in open water. Seldom seen in markets (Ref. 7050). Multiple spawner (Ref. 56317).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 05.05.92
Modified by: Casal, Christine Marie V. - 13.02.14
Checked by: Luna, Susan M. - 16.08.94

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 Not for publication.

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