Notes on the discovery and ecology of the invasive armoured catfish Pterygoplichthys disjunctivus (Weber, 1991) and the exotic cichlid Amphilophus trimaculatus (Gunther, 1867) from Southern West Bengal, India

Priyankar Chakraborty, Suktara Chakrabarti, Prasun Mukherjee, Kranti Yardi, Subhankar Das



This paper documents the first occurrence of the exotic, highly invasive, South American armoured sucker mouth catfish Pterygoplichthys disjunctivus (Weber, 1991) from the brackish waters of the Sundarban Tiger Reserve, West Bengal, India and the Central American cichlid Amphilophus trimaculatus (Gunther, 1867) from Southern Bengal, India. Notes on the possible threats due to invasion, sources of introduction, extent of spread and management of these and other invasive species are discussed in the paper.


exotic species; naturalization; hybridisation; ornamental fish; uncontrolled spread; aquarium trade

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Armbruster J.W., 1998, Modifications of the digestive tract for holding air in loricariid and scoloplacid catfishes. Copeia. 3: 663–675.

Ambruster J.W., 2001, Loricariid Home Page. (, [Accessed: February 2, 2010].

Bijukumar A., Smrithy R., Sureshkumar U. & George S., 2015, Invasion of South American suckermouth armoured catfishes Pterygoplichthys spp. (Loricariidae) in Kerala, India - a case study. Journal of Threatened Taxa 7(3): 6987-6995.

Cagauan A.G., 2007, Exotic aquatic species introduction in the Philippines for aquaculture - A threat to biodiversity or a boom to the economy? J. Environ. Sci. Manage. 10: 48–62.

Capps K.A., Nico L.G., Mendoza-Carranza M., Arevalo-Frias W., Ropicki A.J., Hellpern S.A. & Rodiles-Hernandez R., 2011, Salinity tolerance of non-native suckermouth armoured catfish (Loricariidae: Pterygoplichthys) in south-eastern Mexico: Implications for invasion and dispersal. Aquat. Conserv. 21: 528–540.

CEC (Commission for Environmental Cooperation), 2009, Trinational Risk Assessment Guidelines for Aquatic Alien Invasive Species: Test Cases for the Snakeheads (Channidae) and Armored Catfishes (Loricariidae) in North American Inland Waters. CEC Publications: Montreal, Canada.

Courtenay W.R., 1997, Tilapias as non-indigenous species in the Americas: environmental, regulatory, and legal issues, [in:] B.A. Costa-Pierce & J.E. Rakocy (eds), Tilapia Aquaculture in the Americas Vol. 1. World Aquaculture Society, Baton Rouge, LA: 18–33.

Froese R. & Pauly D. (eds), 2019, FishBase. World Wide Web electronic publication., version (02/2019).

Fuller P.L., Nico L.G. & Williams J.D., 1999, Nonindigenous fishes introduced into inland waters of the United States. Am. Fish. Soc. Spec. Pub. 27: 1–622.

Hedianto D.A., Purnomo K., Kartamihardja E.S. & Warsa A., 2014, Parameter populasi ikan lohan (Cichlasoma trimaculatum, Günther 1867) di Waduk Sempor, Jawa Tengah. J. Lit. Perikan. Ind. 20(2): 81-88.

Hoover J.J., Killgore K.J. & Cofrancesco A.F., 2004, Suckermouth catfishes: Threats to aquatic ecosystems of the United States. Aquatic Nuisance Species Research Bulletin 4: 1–8.

Hossain M.Y., Rahman M.M., Ahmed Z.F., Ohtomi J. & Islam A.B.M.S., 2008, First record of the South American sailfin catfish Pterygoplichthys multiradiatus in Bangladesh. Journal of Applied. Ichthyology 24: 718–720.

Knight J.D.M. & Devi K.R., 2009, On a record of Amphilophus trimaculatum (Günther) (Teleostei: Perciformes: Cichlidae) in the natural waters of Tamil Nadu, India. Journal of the Bombay Natural History Society 106(3): 347-348.

Krishnakumar K., Raghavan R., Prasad G., Bijukumar A., Sekharan M., Periera B. & Ali A., 2009, When pets become pests - exotic aquarium fishes and biological invasions in Kerala, India. Current Science 97: 474–476.

Leidy R.A. & Moyle P.B., 1998, Conservation status of the world’s fresh water fish fauna: an overview, [in:] P.L. Fielder, P.M. Karieva (eds), Conservation Biology: For Coming Decade, 2nd edition. Chapman and Hall, New York: 187-227

Liang S.H., Wu H.P. & Shieh B.S., 2005, Size, structure, reproductive phenology and sex ratio of an exotic Armoured Catfish (Liposacrus multiradiatus) in Kaoping River of Southern Taiwan. Zoological Studies 44(2): 252–259.

Lowe S., Browne M., Boudjelas S. & De Poorter M., 2000, 100 of the World’s Worst Invasive Alien Species A selection from the Global Invasive Species Database. The Invasive Species Specialist Group (ISSG) a specialist group of the Species Survival Commission (SSC) of the World Conservation Union (IUCN), Auckland, New Zealand, 12 pp. (

Lutz C.G., 2004, When hybrids attack. Aquaculture Magazine 30 (6): 1-2.

Nico L.G., Loftus W.F. & Reid J.P., 2009, Interactions between armored suckermouth catfish (Loricariidae: Pterygoplichthys) and native Florida manatee (Trichechus manatus latirostris) in artesian springs. Aquatic Invasions 4: 511–519.

Nico L.G., Beamish W.H. & Musikasinthorn P., 2007, Discovery of the invasive Mayan Cichlid fish “Cichlasoma” urophthalmus (Günther 1862) in Thailand, with comments on other introductions and potential impacts. Aquatic Invasions 2(3): 197-214.

Nico, L.G., Schofield, P.J., and Neilson, M.E., 2019, Oreochromis niloticus (Linnaeus, 1758): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL,, Revision Date: 6/17/2019, Peer Review Date: 4/1/2016, Access Date: 10/19/2019

Nico L.G., Butt P.L., Johnson G.R., Jelks H.L., Kail M. & Walsh S.J., 2012, Discovery of the South American Suckermouth Armoured Catfish (Loricariidae, Pterygoplichthys spp.) in the Santa Fe River drainage, Suwannee River basin, USA. Bioinvasion Records 1: 179–200. (

Page, L.M. and Robins R.H., 2006. Identification of sailfin catfishes (Teleostei: Loricariidae) in Southeastern Asia. Raffles Bull. Zool. 54(2): 455-457.

Raghavan R., Dahanukar N., Tlusty M.F., Rhyne A.L., Krishna Kumar K., Molur S. & Rosser A.M., 2013, Uncovering an obscure trade: Threatened freshwater fishes and the aquarium pet markets. Biological Conservation 164:158–169. (

Raghavan R., Prasad G., Anvar-Ali P.H. & Pereira B., 2008, Exotic fish species in a global biodiversity hotspot: Observations from River Chalakudy, part of Western Ghats, Kerala, India. Biological Invasions 10: 37-40.

Rahel F.J., 2002, Homogenization of freshwater faunas. Annual Review of Ecology and Systematics 33(1): 291-315.

Říčan, O., Piálek, L., Dragová K. & Novák J., 2016, Diversity and evolution of the Middle American cichlid fishes (Teleostei: Cichlidae) with revised classification. Vertebrate Zoology 66 (1): 1-102.

Singh A.K., 2014, Emerging alien species in Indian aquaculture: prospects and threats. Journal of Aquatic Biology & Fisheries 2: 32–41.

Welcomme R. & Vidthayanom C., 2003, The impacts of introductions and stocking of exotic species in the Mekong Basin and policies for their control. MRC Technical Paper No. 9, Mekong River Commission, Phnom Penh, 38 pp.

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