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Mahseer (Tor spp.) fishes of the world: Status, challenges and opportunities for conservation

Pinder, Adrian C.; Britton, J. Robert; Harrison, Andrew J.; Nautiyal, Prakash; Bower, Shannon D.; Cooke, Steven J.; Lockett, Steve; Everard, Mark; Katwate, Unmesh; Ranjeet, K.; Walton, Sam; Danylchuk, Andy J.; Dahanukar, Neelesh; Raghavan, Rajeev

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Adrian C. Pinder

J. Robert Britton

Andrew J. Harrison

Prakash Nautiyal

Shannon D. Bower

Steven J. Cooke

Steve Lockett

Mark Everard
Associate Professor in Ecosystem Services

Unmesh Katwate

K. Ranjeet

Sam Walton

Andy J. Danylchuk

Neelesh Dahanukar

Rajeev Raghavan


© 2019, The Author(s). The mahseer fishes (Tor spp.) represent an iconic genus of large-bodied species of the Cyprinidae family. Across the 16 recognised species in the genus, individual fish can attain weights over 50kg, resulting in some species being considered as premier sport fishes. Tor species also generally have high religious and cultural significance throughout South and Southeast Asia. Despite their economic and cultural importance, the status of Tor fishes has been increasingly imperilled through their riverine habitats being impacted by anthropogenic activities, such as hydropower dam construction and exploitation. Moreover, conservation efforts have been constrained by knowledge on the genus being heavily skewed towards aquaculture, with considerable knowledge gaps on their taxonomy, autecology, distribution and population status. Whilst taxonomic ambiguity has been a major constraint on conservation efforts, this has been partially overcome by recent, robust taxonomic revisions. This has enabled revision of the IUCN Red List status of Tor fishes; three species are now assessed as ‘Near Threatened’, one ‘Vulnerable’, three ‘Endangered’ and one ‘Critically Endangered’. However, eight species remain ‘Data deficient’. Here, information on these 16 Tor fishes is synthesised for the first time, outlining the current state of knowledge for each species, including their known distributions and population status. For each species, the outstanding gaps in knowledge are also identified, and their population threats and conservation prospects outlined. Consequently, this review provides the basis for researchers to challenge and enhance the knowledge base necessary to conserve these freshwater icons in an era of unprecedented environmental changes.


Pinder, A. C., Britton, J. R., Harrison, A. J., Nautiyal, P., Bower, S. D., Cooke, S. J., …Raghavan, R. (2019). Mahseer (Tor spp.) fishes of the world: Status, challenges and opportunities for conservation. Reviews in Fish Biology and Fisheries, 29(2), 417-452.

Journal Article Type Review
Acceptance Date Apr 23, 2019
Online Publication Date May 2, 2019
Publication Date Jun 1, 2019
Deposit Date May 7, 2019
Publicly Available Date May 7, 2019
Journal Reviews in Fish Biology and Fisheries
Print ISSN 0960-3166
Electronic ISSN 1573-5184
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 29
Issue 2
Pages 417-452
Keywords freshwater fishes, megafauna, Asia, recreational angling, taxonomy, species distributions
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