Feeding ecology of the endemic freshwater puffer fish Carinotetradon travancoricus (Hora & Nair, 1941) in Western Ghats hotspot, India

Chelapurath Radhakrishnan Renjithkumar, Kuttanelloor Roshni, Kutty Ranjeet


The study aimed to investigate the feeding ecology of a vulnerable freshwater puffer fish, Carinotetradon travancoricus from the Chalakudy river of Kerala, Western Ghats, a biodiversity hotspot of India. Fishes were sampled from October 2018 to September 2019. Stomach condition of the fishes showed the percentage of empty gut to be significantly higher during all seasons (P< 0.01). Feeding intensity depicted the fish to follow an ‘active’ feeding strategy (31.59±10.32%) during pre-monsoon season. Diet composition and relative length of gut analysis indicated that the fish during its early stages relied on an omnivorous diet however preferring autochthonous food materials such as insects (27.91%) and crustaceans (25.30%) during its adult stages. A perceptible variation in the feeding strategy associated with the spawning season of C. travancoricus was also noticed. During their spawning season (May-August), a greater preponderance towards animal matter (52.18%) was noticed in their diet. The results of gastrosomatic index indicated that feeding activity of C. travancoricus is considerably reduced (2.99) during the spawning period. The present study provides the baseline information on the feeding ecology of C. travancoricus which could be helpful to aquarists for breeding and rearing of this species in captivity and thereby reducing their fishing pressure in wild.


Puffer fish, Chalakudy river, Diet preference, Omnivorous, Feeding intensity.

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Ajithkumar C.R., Remadevi K., Thomas K.R., Biju C.R. (1999). Fish fauna, abundance and distribution in Chalakudy river system, Kerala. Journal of Bombay Natural History Society, 96: 244-254.

Alam A., Joshi K.D., Das S.C. (2016). Feeding and reproductive behaviour of the river catfish Rita rita (Hamilton,1822) in the river Ganga, India. Indian Journal of Animal Science, 86(6): 736-740.

Allen D.J., Molur S., Daniel B.A. (2010). The status and distribution of freshwater biodiversity in the Eastern Himalaya. IUCN, Cambridge, UK and Gland, Switzerland; Zoo Outreach Organization, Coimbatore, India.

Al-Hussaini A.H. (1949). On the functional morphology of the alimentary tract of some fishes in relation to differences in their feeding habits. Quaternary Journal of Marine Science, 9: 190-240

Anupama K.M., Harikrishnan M. (2015). Improved survival of Malabar puffer fish, Carinotetraodon travancoricus (Hora and Nair, 1941) in planted aquaria, International Journal of Environmental Sciences, 6(1): 138-144.

Anupama K.M., Hari Sankar H.S., Rithin R.M., Harikrishnan M. (2019). Reproductive Biology of Malabar Pufferfish Carinotetraodon travancoricus (Tetraodontidae). Journal of Ichthyology, 59: 545-554.

Begum M., Alam M.J., Islam M.A., Pal H.K. (2008). On the food and feeding habit of an estuarine catfish (Mystus gulio Hamilton) in the south-west coast of Bangladesh. University Journal of Zoology, Rajshahi University, 27: 91-94.

Bonato K.O., Delariva R.L., Silva J.C. (2012). Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil. Zoologia, 29(1): 27-38.

Bowen S.H. (1996). Quantitative description of the diet. In: B.R Murphy, D.W Willis (Eds.). Fisheries techniques 2nd ed, American Fisheries Society, Bethesda, M.D. pp: 513-532.

Braga R.R., Bornatowski H., Vitule J.R.S. (2012). Erratum to: Feeding ecology of fishes: an overview of worldwide publications. Review in Fish Biology and Fisheries, 22: 931-932.

Dahanukar N. (2011). Carinotetraodon travancoricus, The IUCN Red List of Threatened Species. e.T166591A6242813. Available from https://doi.org/ 10.2305/IUCN.UK.2011-1.RLTS.T166591A6242813. en. Retrieved 6/15/2020.

Desai V.R. (1970). Studies on the fishery and biology of Tor tor (Hamilton) from river Narmada. I. Food and feeding Habits. Journal of Inland Fish Society of India, 2: 101-112.

de Oliveira J.C.D., de Oliveira J.F., Rebouças L.G.F., Novaes J.L.C., Fernandes R.T.V., Peretti D. (2019). Diet of two insectivorous fish species in a Brazilian semiarid reservoir. Journal of Animal Behaviour Biometeorology, 7: 11-17.

Dibble E.D., Thomaz S.M. (2009). Use of fractal dimension to assess habitat complexity and its influence on dominant invertebrates inhabiting tropical and temperate macrophytes. Journal of Freshwater Ecology, 24: 93-102.

Dibble E.D., Killgore K.J., Harrel S.L. (1996). Assessment of fish-plant interactions. American Fisheries Society Symposium, 16: 357-372

Ebert K. (2001). The puffers of fresh and brackish waters. Mo¨rfelden-Walldorf: A.C.S. Glaser. 96 p

Gomez K.A., Gomez A.A. (1984). Statistical procedures for agricultural research (2 ed.). John Wiley and Sons, New York. 680 p.

Grzybkowska M., Dukowska M., Leszczyńska J., Lik J., Szczerkowska-Majchrzak E., Przybylski M. (2018). The food resources exploitation by small-sized fish in a riverine macrophyte habitat. Ecological Indicator, 90: 206-214.

Gupta S., Banerjee S. (2014). Food and Feeding habit of a Freshwater fish, Mystus tengara (Siluriformes: Bagridae). Journal of Ichthyology, 54: 742-748.

Hensen R.R., Ploeg A., Fossa S.A. (2010). Standard Names for Freshwater Fishes in the Ornamental Aquatic Industry. OFI Educational Publication 5. Ornamental Fish International. The Netherlands, 146 p.

Hora S.L., Nair K.K. (1941). Notes on the fishes in Indian Museum X11, New records of freshwater fish from Travancore. Records of Indian Museum, 48(4): 387-393

Huo B., Xie C.X., Madenjian C.P., Ma B.S., Yang X.F., Huang H.P. (2014). Feeding habits of an endemic fish, Oxygymnocypris stewartii, in the Yarlung Zangbo River in Tibet, China. Environmental Biology of Fishes, 97: 1279-1293.

Hynes H.B.N. (1950). On the food of the freshwater sticklebacks (Gastrosteus aculeatus and Pygosteus pungitius) with a review of the methods used in the study of food fishes. Journal of Animal Ecology, 19: 36-58.

Ikusemiju K., Olaniyan C.I.O. (1977). The food and feeding habits of the catfishes Chrysichthys walker (Gunther) and Chrysichthys filamentosus (Boulenger) and Chrysicthhys nigrodigitatus (Lacepede) in the Lekki lagoon, Nigeria. Journal of Fish Biology, 10: 105-112.

Johnson J.A., Arunachalam M. (2012). Feeding habit and food partitioning in a stream fish community of Western Ghats, India. Environmental Biology of Fishes, 93: 51-60.

Joshy C.O. (2004). Systematics and bionomics of tetraodontids along south west coast of India and inland waters of Kerala, PhD Thesis, Department of Zoology, University of Calicut, India. 243 p.

Karmaker P., Biswas S.P. (2015). On certain aspects of feeding biology of puffer fish Tetradon cutcutia (Tetraodontidae) from Jorhat district, Assam Journal of Global Bioscience, 4(4): 2067¬-2071.

Kouřimská L., Adámková A. (2016). Nutritional and sensory quality of edible insects. NFS Journal, 4: 22-26.

Kramer D.L., Bryant M.J. (1995). Intestine length in the fishes of a tropical stream .2. Relationships to diet - the long and short of a convoluted issue. Environmental Biology of Fishes, 42(2): 129¬-141

Krumme H., Keetham U., Saint-Paul., Hillock W. (2007). Contribution to the feeding ecology of the banded puffer fish Colomesus psittacus (Tetraodontidae) in north Brazilian mangrove creeks. Brazilian Journal of Biology, 67(3): 383-392.

Lagler K.F. (1956). Freshwater fishery biology. WC Brown Co. Dubuque, Lowa. 360 p.

Lazzaro X. (1987). A review of planktivorous fishes: their evolution, feeding behaviours, selectivities, and impacts. Hydrobiologia, 146: 97-167.

Liya J., Ramachandran A. (2013). Linking sustainability indicators of Indian wild caught ornamental fish industry. International Journal of Environmental Sciences, 3(6): 1891-1898

Lopes V.G., Nessimian J.L., Da-Silva E.R., Gomes J.H.C., Dias A.C.I.M., Souza L.C., Branco C.W.C. (2016). Habitat heterogeneity on feeding habit of two sympatric and congeneric characidae fishes in two tropical reservoirs. Iheringia, Série Zoologia, 106: 1-7.

Manorama M., Ramanujam S.N. (2017). Diet of threatened fish Pethia shalynius (Yazdani and Talukdar 1975) in the Umiam River, Northeast India. Asian Fisheries Science, 30: 38-49.

Mondal D.K., Kaviraj A. (2010). Feeding and reproductive biology of Indian shad Gudusia chapra in two floodplain lakes in India. Electronic Journal of Biology, 6: 98-102.

Myers N., Mittermeier R.A., Mittermeier C.G., Da Fonseca G.A.B., Kent J. (2000). Biodiversity hotspots for conservation priorities. Nature, 403: 853-858.

Nandy T., Mandal S. (2020). Unravelling the spatio-temporal variation of zooplankton community from the river Matla in the Sundarbans Estuarine System, India. Oceanologia, 62(3): 326-346

Nelson J.S. (2006). Fishes of the world, fourth edition. John Wiley & Sons, Inc, Hoboken. 601 p.

Olivier K. (2001). The Ornamental Fish Market. FAO/Globefish Research Programme, vol. 67. United Nations Food and Agriculture Organisation, Rome. 88 p.

Pillay T.V.R. (1952). A critique of the method of study of food fishes. Journal of Zoological Society of India, 42: 185-200.

Pinder L.C.V. (1995) The habitats of chironomid larvae. In: P.D Armitage, P.S Cranston, L.C.V Pinder (Eds). The Chironomidae. Springer, Dordrecht. pp: 107-135

Pinkas L., Oliphant M.S., Inverson I.L.K. (1971). Food habits of albacore, bluefin tuna, and bonito in California waters. California Fish Game, 152: 1-105.

Prasad G., Sabu K., Prathibhakumari P.V. (2012). The first report of the Malabar puffer, Carinotetraodon travancoricus (Hora & Nair, 1941) from the Neyyar wildlife sanctuary with a note on its feeding habit and length-weight relationship. Journal of New Biological Reports, 1: 42-46.

Priyadarshana T., Asaeda T., Manatunge J. (2001). Foraging behaviour of planktivorous fish in artificial vegetation: the effects on swimming and feeding. Hydrobiologia, 442: 231-239.

Quirino B.A., Carniatto N., Gaiotto J.V., Fugi R. (2015). Seasonal variation in the use of food resources by small fishes inhabiting the littoral zone in a Neotropical floodplain lake. Aquatic Ecology, 49: 431-440.

Raghavan R., Prasad G., Ali A.P.H., Pereira B. (2008). Fish fauna of Chalakudy River, part of Western Ghat Biodiversity Hotspot, Kerala, India: patterns of distribution, threats and conservation needs. Biodiversity and Conservation,17(13): 3119-3131

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

Remadevi K., Indra J., Raghunathan M.B. (2000). On a report of Tetraodon (Monotretus) travancoricus from Karnataka. Journal of Bombay Natural History Society, 97: 441-442.

Rhyne A.L., Tlusty M.F., Schofield P.J., Kaufman L., Morris Jr J.A. (2012). Revealing the appetite of the marine aquarium fish trade: the volume and biodiversity offish imported into the United States. PLoS One, 7(5): e35808.

Roshni K., Renjithkumar C.R., Kurup B.M. (2016). Food and feeding habits of an exotic fish, Oreochromis mossambicus (Peters) from a tropical reservoir of Chalakudy River, Kerala. Indian Journal of Fisheries, 63(4): 132-136.

Saikia S.K. (2016). On the methodology of feeding ecology in fish. European Journal of Ecology, 2: 35-46.

Sarkar U.K., Deepak P.K. (2009). The diet of clown knife fish Chitala chitala (Hamilton-Buchanan) an endangered Notopterid from different wild population (India). Electronic Journal of Ichthyology, 1: 11-20.

Serrajuddin M., Khan A.A., Mustafa S. (1998). Food and feeding habits of spiny eel, Mastacembelus armatus. Asian Fisheries Science, 11: 271-278

Tonella L.H., Fugi R., Vitorino Jr O.B., Suzuki H.I., Gomes L.C., Agostinho A.A. (2018). Importance of feeding strategies on the long-term success of fish invasions. Hydrobiologia, 817: 239-252

Thomaz S.M., Dibble E.D., Evangelista L.R., Higuti J., Bini L.M. (2008). Influence of aquatic macrophyte habitat complexity on invertebrate abundance and richness in tropical lagoons. Freshwater Biology, 53: 358-367.

Wootton R.J. (1990). Ecology of teleost fishes. Chapman and Hall, Fish and Fisheries Ser 1, London. 404 p.

Yamanoue Y., Miya M., Doi H., Mabuchi K., Sakai H., Nishida M. (2011). Multiple Invasions into Freshwater by Pufferfishes (Teleostei: Tetraodontidae): A Mitogenomic Perspective. PLoS One, 6(2): e17410.


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