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Tor douronensis  (Valenciennes, 1842)

Semah mahseer
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Tor douronensis
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > No subfamily

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 7.7 - 8.7.   Tropical; 18°C - 26°C (Ref. 56147)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Thailand east to Viet Nam and south to Indonesia (Ref. 7050). Known from the Chao Phraya (Ref. 26336) and Mekong (Ref. 13848).

Length at first maturity / Size / Weight / Age

Maturity: Lm 51.9, range 44 - 63.5 cm
Max length : 35.0 cm TL male/unsexed; (Ref. 7050)

Short description Morphology | Morphometrics

Dorsal spines (total): 4; Dorsal soft rays (total): 7-9; Anal spines: 3; Anal soft rays: 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     Glossary (e.g. epibenthic)

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).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Zhou, W. and G.H. Cui, 1996. A review of Tor species from the Lancangjiang River (Upper Mekong River), China (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwat. 7(2):131-142. (Ref. 13848)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 108899)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial; aquaculture: commercial; aquarium: commercial
FAO(fisheries: production; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  2.9   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Fec=2,676).
Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100) .
Price category (Ref. 80766):   Unknown.