Vol. 78 2026
ARTICLES
Schistura kalikholaensis, a New Loach from the Brahmaputra River Drainage, West Bengal, India (Cypriniformes: Nemacheilidae)
Pratima Singh, Bidhi Mukherjee, Shibananda Rath & Laishram Kosygin*
More info
*Zoological Survey of India, Freshwater Fish Section, 27 J.L. Nehru Road, Kolkata 700016, India; E-mail: singhpratimakol@gmail.com; bidhi.mukherjee@gmail.com; shiba12345@rediffmail.com; lkzsi5@yahoo.com
Abstract
Schistura kalikholaensis, new species, is described from the Brahmaputra River drainage in West Bengal, India. It is distinguished from its congeners by a combination of characters: body with 10-12 black broad bars, the 6-7 contralateral bars before the anal fin arranged alternately and not continuous along the dorsal surface; lateral line incomplete, extending vertically to the tip of the anal fin, with 52-64 pores; a rounded spot on the base of anal fin origin; slightly emarginated caudal fin; maxillary barbel reaching beyond the posterior margin of eye; dorsal adipose crest present and no suborbital flap.
Key words
New species, Schistura, rheophilic, Tista River, Kalikhola
How to Cite
Singh P., Mukherjee B., Rath S. & Kosygin L. 2026. Schistura kalikholaensis, a New Loach from the Brahmaputra River Drainage, West Bengal, India (Cypriniformes: Nemacheilidae). Acta zoologica bulgarica 78.
References
- Choudhury H,, Mukhim D. K. B., Basumatary S., Warbah D. P. & Sarma D. 2017. Schistura larketensis, a new cavernicolous fish (Teleostei: Nemacheilidae) from Meghalaya, Northeast India. Zootaxa 4353: 89-100.
- Choudhury H., Mukhim D. K. B., Dey A., Warbah D. P. & Sarma D. 2019. Schistura syngkai, a new fish species (Teleostei: Nemacheilidae) from Meghalaya, northeast India. Zootaxa 4701:185-191.
- Day F. 1878. The fishes of India; being a natural history of the fishes known to inhabiting the seas and freshwaters of India, Burma and Ceylon. Quaritch, London, 4: 553-778.
- Fricke R., Eschmeyer W. N. & Van der Laan R. (eds). 2025. Eschmeyer›s Catalog of Fishes: Genera, Species, References. (http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp). Electronic version accessed on 21 August 2025.
- Günther A. 1868. Catalogue of the fishes in the British Museum. 7. Physostomi. British Museum, London, 512 p.
- Hora S. L. 1935. Notes on fishes in the Indian Museum. XXIV. Loaches of the genus Nemachilus from eastern Himalayas, with the description of a new species from Burma and Siam. Records of the Indian Museum 37: 49-67, Pl. 3.
- Kottelat M. 1990. Indochinese nemacheilines, a revision of nemacheiline loaches (Pisces: Cypriniformes) of Thailand, Burma, Laos, Cambodia and southern Vietnam. Verlag, Dr. Friedrich Pfiel, Munchen, 262 p.
- Kottelat M., Harries R. D., Proudlove S. G. 2007. Schistura papulifera, a new species of cave loach from Meghalaya, India (Teleostei: Balitoridae). Zootaxa 1393: 35-44.
- Kottelat M. 2018. Mustura celata, a new genus and species of loaches from northern Myanmar, and an overview of Physoschistura and related taxa (Teleostei: Nemacheilidae). Ichthyological Exploration of Freshwaters/IEF-1080/pp. 1-26. http://doi.org/10.23788/IEF-1080
- Lalramliana. 2012. Schistura aizawlensis, a new species of loach from West Bengal, northeast India (Cypriniformes: Balitoridae). Ichthyological Exploration of Freshwaters 23: 97-104.
- Lalramliana, Lalronunga, S., Vanramliana and Lalthanzara, H. 2014. Schistura mizoramensis, a new species of loach from Mizoram, northeastern India (Teleostei: Nemacheilidae). Ichthyological Exploration of Freshwaters 25 (3): 205-212.
- Lokeshwor Y., Barat A., Sati J., Darshan A., Vishwanath W. & Mahanta P. C. 2012. Schistura obliquofascia, a new loach from Uttarakhand, India (Cypriniformes: Nemacheilidae). Zootaxa 3586: 255-263.
- Lokeshwor Y. & Vishwanath W. 2011. Schistura fasciata, a new nemacheiline species (Cypriniformes: Balitoridae) from Manipur, India. Journal of Threatened Taxa 3: 1514-1519. http://dx.doi.org/10.11609/JoTT.o2454.1514-9
- Lokeshwor Y. & Vishwanath W. 2013. Two new species of stone loaches of the genus Schistura from the Koladyne basin, Mizoram, India (Teleostei: Cobitoidei: Nemacheilidae). Zootaxa 3731 (4): 561-576. http://dx.doi.org/10.11646/zootaxa.3731.4.8
- Lokeshwor Y. & Vishwanath W. 2015. Schistura liyaiensis, a new loach from Barak River, Manipur, India (Cypriniformes: Nemacheilidae). Ichthyological Research 62: 313-319. http://dx.doi.org/10.1007/s10228-014-0447-2
- Lokeshwor, Y., Vishwanath, W. and Kosygin, L. 2013. Schistura paucireticulata, a new loach from Tuirial River, Mizoram, India (Teleostei: Nemacheilidae). Zootaxa 3682 (5): 581-588.
- McClelland J. 1838. Observations on six new species of Cyprinidae, with an outline of a new classification of the Family. Journal and Proceedings of the Asiatic Society of Bengal (7): 941-948.
- McClelland J. 1839. Indian cyprinidae. Asiatic Researches 19: 217-471.
- Menon A. G. K. 1987. The fauna of India and the adjacent countries. Pisces, Vol. 4, Teleostei: Cobitoidea, Part I, Homalopteridae. Zoological Survey of India, Calcutta, 259 p.
- Mukhim D. K. B., Sarma K., Choudhury H., Chadran R., Das R., Singh R. K., Warbah D. P., Sarkar U. K. & Sarma D. 2024. Schistura sonarengaensis, a new species of cave-dwelling loach (Teleostei: Nemacheilidae) from Meghalaya, northeast India. Journal of Fish Biology l105 (4): 1240-1255.
- Mukhim D. K. B., Sarma K., Choudhury H., Das R., Chandran R., Singh R. K., Warbah D. P., Lyngdoh W., Sarkar U. K. & Sarma D. 2025. Description of a new troglophilic loach, Schistura densiclava (Teleostei: Nemacheilidae) from Meghalaya, northeast India. Journal of Fish Biology https://doi.org/10.1111/jfb.70092.
- Ng H.H, & Rachmatika I. 2005. Glyptothorax exodon, a new species of rheophilic catfishes from Borneo (Teleostei: Sisoridae). Raffles Bulletin of Zoology 53:251-255.
- Singh A., Sen N., Bănărescu P. M. & Nalbant T. T. 1982. New nemacheiline loaches from India (Pisces, Cobitidae). Travaux du Muséumd’ Histoire Naturelle „Grigore Antipa” 23: 201-212.
- Sawada. Y. 1982. Phylogeny and zoogeography of the superfamily cobitoidea (cyprinoidei, cypriniformes). Memoirs of the Faculty of Fisheries, Hokkaido University 28 (2): 65-223.
- Vishwanath W. & Laishram J. 2001. Fishes of the subfamily Nemacheiliane Regan (Cyprinidae: Balitoridae) from Manipur. Journal of the Bombay Natural History Society 98 (2): 197-216.
- Vishwanath W. & Nebeshwar Sharma K. 2005. A new nemacheiline fish of the genus Schistura McClelland (Cypriniformes: Balitoridae) from Manipur, India. Journal of the Bombay Natural History Society 102 (1): 79-82.


