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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Sep 2018, 39 (5)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Stomach contents of Plotosus canius (Hamilton, 1822) in the coastal waters of Port Dickson, Peninsular Malaysia


B.I. Usman2, S.M.N. Amin1*, A. Arshad1, Mohd. S. Kamarudin1 and M.K. Abu Hena3

1Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia

2Department of Fisheries and Aquaculture, Faculty of Agriculture, Bayero University, 700 241, Kano, Nigeria

3Department of Animal Science and Fishery, Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Bintulu Sarawak Campus, 97008, Malaysia

*Corresponding Author E-mail:




Key words

Index of preponderance

Opportunistic feeder

Plotosus canius

Stomach contents

Stomach fullness




Publication Data

Paper received : 20.03.2017

Revised received : 05.07.2017

Re-revised received : 30.09.2017

Accepted : 28.12.2017



Aim: Grey-eel catfish, Plotosus canius, are euryhaline fish and native throughout South East Asia, but there is limited information regarding their feeding habits.     


Methodology: In this study, the stomach contents from 234 samples of P. canius were analysed from the coastal waters of Port Dickson, Peninsular Malaysia. Sampling was carried over a period of twelve months (January to December, 2012).      


Results: The study revealed that 61.54% of the stomachs contained food at various degrees of fullness, while the remaining (38.46%) were empty. According to index of preponderance (IP), the stomach contents in P. canius were composed of six major groups viz; fish and fish parts (38.00%), crustaceans (26.69%), molluscs (25.58%), sand and mud (6.68%), debris and detritus (2.99%) and unidentified items (0.06).


Interpretation: The diet composition revealed a wide range of prey items of animal origin indicating that the fish is carnivorous. The findings of the present study would be very useful for the development of aquaculture of the fish.




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