Torinae is a subfamily of freshwater ray-finned fishes belonging to the family Cyprinidae, which includes the carps, barbs and related fishes. Fish in this subfamily inhabit the paleotropics, ranging from Africa, the Middle East including the Arabian Peninsula, South Asia, Southeast Asia, and up to Nepal and China. Members of Torinae inhabit both rivers and lakes, with some species ascending into rapids with rocky bottoms for breeding. Like other carp, they are generalist omnivores, eating algae, crustaceans, insects, frogs, other fish, and fruit that fall from overhead trees.
The Asian species were often revered by the cultures native to their range. Due to their size, they are commercially important, being appreciated as game fish as well as highly esteemed food fish, with some species being aquacultured for both food and as ornamentals. Several species have suffered severe declines due to pollution, habitat loss, overfishing, along with introduced species; they are now considered threatened.
Common names A number of Asian species within the subfamily are known as mahseers, a term originating from the Indian subcontinent as a generic term for large-bodied cyprinids, especially those with barbels and large scales. The term, alternatively rendered as mahsir , mahsur , mahaseer, or mahasir, has a disputed etymology, though it seems to originate from the Hindi word mahāsir. This word may have ultimately originated from: Mahasir, mahasirasha, or mahasiras, from the Sanskrit words mahat (big, great) + śiras ("head"; alternatively "front of body"),Lacy, G.H. & E. Cretin. 1905. The Angler's Handbook for India. 4th edition. Newman & Co. Calcutta. though this may merely be an "attempt to give a meaning to the word". Massulah, mahasaula, mahasaul, mahasalka, mahā-śalka, mahashol, or mahasol (big-scaled);Nautiyal, P. 2014. Review of the art and science of Indian mahseer (game fish) from nineteenth to twentieth century: Road to extinction or conservation. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 84(2): 215-236. shol is also the Bengali name for Channa striata, and large mahseers are noted to have scales "as big as the murrel [C. striata]". Matsya (Sanskrit for "fish"); name shared with an avatar of Vishnu. Mahā-āsya ("great mouth"); proposed by Henry Sullivan (H.S.) Thomas.Yule, Henry, Sir. Hobson-Jobson: A glossary of colloquial Anglo-Indian words and phrases, and of kindred terms, etymological, historical, geographical and discursive. New ed. edited by William Crooke, B.A. London: J. Murray, 1903. Mahashila, translated by Sadhale and Nene as "stone-like", alluding to the fish's power.On fish in Manasollasa (c. 1131 AD) N Sadhale, YL Nene – Asian Agri-Hist, 2005 – asianagrihistory.org Mahasher, mahāser, or mahaseer (Persian for "big tiger", or "big lion", in recognition of their gameness); may be a fanciful translation, though is considered by some to be the most likely etymology.
In English, "mahseer" may be used for fish in multiple genera, such as the species of Tor, Neolissochilus, Naziritor, and (erroneously) Hypselobarbus mussullah, though its use is often restricted to the genus Tor, the "true" mahseer. Fish of the other two genera are sometimes distinguished as "lesser mahseer", or "mahseer barb".
In addition, a multitude of local common names are known, as the distribution of Torinae, including the mahseers, encompass a vast geographical region containing hundreds of languages. Mahseers in Indonesia possess a multitude of names owing to the multiethnic composition of the country; in certain parts of Java, they are referred to as ikan dewa; literally God-Fish or Fish of the Gods. Some names are shared with Malay, such as empurau, kelah, semah, or pelian.
Description Members of this subfamily are united by several features, such as polyploidy, large scales, and a smooth, ossified, last unbranched dorsal-fin ray.Berrebi, P., Chenuil, A., Kotlík, P., Machordom, A. & Tsigenopoulos, C.S. (2014) Disentangling the evolutionary history of the genus Barbus sensu lato, a twenty years adventure. In: Alves, M.J., Cartaxana, A., Correia, A.M. & Lopes, L.F. (Eds.), Professor Carlos Almaça (1934–2010). Estado da Arte em Áreas Cientícas que Desenvolveu. Museu Nacional de História Natural e da Ciência, Lisboa, pp. 29–55Arai, R. (2011) Fish Karyotypes: A Check List. Springer, Tokyo, 348 pp. As members of the carp family, they possess no teeth in their jaws, instead possessing pharyngeal teeth that they use to crush and masticate food, such as bivalves and gastropods.Hora, S.L. 1940. The game fishes of India IX. The mahseer or the large scaled barbels of India 2. The tor mahseer, Barbus (Tor) tor (Hamilton). J. Bombay nat. Hist. Soc., 41:518-25.
These fish are sizeable, with the largest member of this subfamily, the golden mahseer Tor putitora, being known to reach in total length and in weight, though these measurements are exceptional, historical records. Sexual dimorphism is mild if present, with males often being slightly smaller, developing tubercles on their head, and/or possessing brighter coloration, though reliable distinction between sexes is only possible during the breeding season, where ripe females have bulging, soft abdomens and slightly swollen vents.
Mahseers generally prefer fast-flowing cold-water rivers and streams, especially those with rocky bottoms and deep pools.Dinesh, K., Nandeesha, M. C., Nautiyal, P. and Aiyyappa, P. 2010. Mahseers in India: A review with focus on conservation and management. Indian J. Anim. Sci., 80: 26-38Ng, C. K. 2004. King of the rivers: Mahseer in Malaysia and the region. Inter Sea Fishery (M) SDN BHD, Kuala Lumpur, Malaysia, 170 pp. Two species of Neolissochilus are known to inhabit caves, being N. subterraneus of Thailand and N. pnar of India.Vidthayanon, C. and Kottelat, M. 2003. Three new species of fishes from Tham Phra Wang Daeng and Tham Phra Sai Ngam caves in northern Thailand (Teleostei: Cyprinidae and Balitoridae). Ichthyological Exploration of Freshwaters v. 14(no. 2): 159-174.
Like typical carp, species of Torinae are generalist feeders, eating a variety of food sources such as detritus (including municipal sewage and buffalo dung), macrophytes, algae of the filamentous and epilithic (aufwuchs) variety, invertebrates such as mollusks, crustaceans, and insects, along with the occasional small fish. The barbels, protrusible and suctorial mouth, along with mud, sand, and debris within the stomach content of Tor spp. is indicative of a bottom-feeding niche. The mbaraga (Acapoeta tanganicae) retains a generalist diet despite the species' morphological specializations for scrape-feeding on aufwuchs.Eccles, D.H. 1992. FAO species identification sheets for fishery purposes. Field guide to the freshwater fishes of Tanzania. Food and Agriculture Organization of the United Nations, RomeTakamura K. 1984. Interspecific relationships of aufwuchs-eating fishes in Lake Tanganyika. Environmental Biology of Fishes 10 (4): 225–241. DOI Link Dietary niche shift is observed, with juveniles consuming more animal matter than the more herbivorous adults.Engdaw, F., 2014. Morphometric relations, diet composition and ontogenetic dietary shift of L. intermedius (Ruppell, 1836) in Lake Tana gulf of Gorgora, Ethiopia. International Journal of Fishery and Aquaculture, 6: 9-16.
Migratory habits are well known in the larger species, and most migrations occur for reproduction.W. Anteneh Ecology of Spawning Migration and Juvenile Habitat Use by Labeobarbus Spp Addis Ababa University (2013) Mahseer may have multiple spawning events in a year. Spawning behaviors are triggered by changes in temperature and the monsoon flood.MacDonald, A. S. J. 1948. Circumventing the mahseer and other sporting fish in India and Burma. J. Bombay Nat. Hist. Soc., (Bombay) Published 1992, Natraj Publishers, Dehradun.Thomas, H. S. 1897. The rod in India being hints how to obtain sport with remarks on the natural history of fish and their culture, 3rd edn. W. Thacker and Co., London, UK. For approximately a week after hatching, larvae of Tor spp. have a semi-quiescent phase where they aggregate on the benthos with their tails facing outwards. After their yolk is spent, the fry start moving actively and feed on zooplankton such as Artemia and Moina. These fish are slow-growing and long-lived.
Taxonomy
The type genus of Torinae, Tor, apparently originates from tora, a word which – in its various altered, corrupted, or otherwise amended forms – may be considered "generic appellations" for large, Gangetic cyprinids. Historically, the name Barbus tor (sensu Day, 1878)Day, F. 1878. Field notes of Sir Francis Day. William Clowes and Sons, London. was used to describe all "large-scaled barbels" in India.
Torinae contains the following genera:
Acapoeta Cockerell, 1910 Arabibarbus Borkenhagen, 2014 Atlantor Borkenhagen & Freyhof, 2023 Carasobarbus Karaman, 1971 Hypselobarbus Bleeker, 1860 Labeobarbus Rüppell, 1835 Lepidopygopsis B. S. Raj 1941 Mesopotamichthys M. S. Karaman, 1971 Naziritor Mirza & Javed, 1985 Neolissochilus Rainboth, 1985 Osteochilichthys Hora, 1942 Pterocapoeta Günther, 1902 Sanagia Holly, 1926 Tor Gray, 1834
Due to phenotypic plasticity (e;g morphological differences between populations in different water bodies) and/or an unclear initial description, species identification may be difficult to perform. Taxonomic revisions were done in an attempt to resolve this issue, and is likely still needed. For example, Neolissochilus benasi has been consistently found in a basal position to the rest of Neolissochilus and Tor, having diverged earlier from both clades, thus "N." benasi may be moved to a new genus in the future.
The following cladogram is based on a maximum likelihood phylogram based on a set of mitochondrial markers recovered by a 2017 study:
The following cladogram is based on a 2024 study of cyprinid mitogenomes and its resultant maximum likelihood phylogenetic tree:
The following cladogram is based on a Bayesian phylogenetic tree from a 2025 study analyzing 13 mitochondrial PCGs and two ribosomal RNA genes:
The Asian genera are more basal than the African genera, and are tetraploids (2n≈100). According to studies of mitochondrial DNA and RAG1, the more derived hexaploid genera (2n≈150) are thought to have arisen due to a hybridization event in prehistory, where ancestral tetraploid torines reproduced with males of Cyprinion or similar species (which are diploid; 2n≈50), with the resultant offspring colonizing West Asia and Africa.
Relation to humans
Torines are currently of interest for both recreational fishing, being highly valued as game fish, and for aquaculture, where they are reared as food, but also to improve the wild stocks. It is noted that mahseer inhabiting jungles may sometimes be poisonous; after consuming certain fruit (such as those of "Tarnktogenos kerzzii" (=Hydnocarpus kurzii)) their flesh is said to induce a delirious effect. A variety of methods are used when fishing torine fish, including poison. Mahseers have a high market price, with cultured fish often pricing around $30-50 dollars per kg,DOF . Annual Fisheries Statistics, 2016. Volume 1. Department of Fisheries Malaysia; Putrajaya, Malaysia: 2016. p. 53. and wild-caught fish costing up to $250 per kg;Kamarudin M.S., Ramezani-Fard E., Ishak S.D., De Cruz C.R., Bami M.L., Harris M.H.I., Misieng J.D. International Conference of Aquaculture Indonesia. Universitas Padjajaran; Bandung, Indonesia: 2014. Feeding and nutrition of endangered mahseers: A review. Keynote Paper. mahseers are one of the most expensive freshwater fish products, and are thus cultured in Malaysia and Indonesia.