Aquaculture International

, Volume 20, Issue 5, pp 827–845 | Cite as

Factors affecting fish yield and profit in fish pen culture in flooded ricefields

  • Nam Cao QuocEmail author
  • Nico Vromant
  • Duong Le Thanh
  • Frans Ollevier


In recent years, a rotational system consisting of two rice crops followed by a fish pen culture during the monsoon flood period was adopted in parts of the flood-prone region of the Mekong Delta. In this paper, we use the survey data from 51 fish pen farmers at Co Do and Vinh Thanh district, Can Tho City, to investigate the factors affecting fish yield and profit in such fish pen culture system. The net yield of all stocked fish varies from 377 to 3,782 kg/ha/crop while the return above variable costs varies from −5.3 to 9.8 million VND/ha/crop. Low fish price at harvest and the difficulty to sell below market sized fish at a period of oversupply are the main problems for fish pen culture. Fish net yield significantly increases with stocking density and is linked with specific polycultures. Common carp and bighead carp perform best in fish pen culture, both in production and profit considerations. Harvest body mass of common carp is mainly limited by increasing common carp stocking density. Therefore, a stocking density of common carp of about 6,000 fish/ha is recommended to obtain the optimum combination of reasonable body masses, and a good price, as well as a high return above fingerling costs.


Fish pen culture Polyculture Profit Stocking density Yield 



This study was funded by the Belgian Development Agency (BTC) and the Vietnamese Ministry of Education and Training. Practical support was given by the Mekong Delta Development Research Institute, Can Tho University, Vietnam and the Laboratory of Aquatic Ecology and Evolutionary Biology, Department of Biology, Faculty of Science, Katholieke Universiteit Leuven, Belgium. Special thanks are due to H. C. Linh, N. V. Nhat and N. T. Binh for the successful implementation of the survey. The authors would like to thank two anonymous reviewers for there positive comments and suggestions.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Nam Cao Quoc
    • 1
    Email author
  • Nico Vromant
    • 2
  • Duong Le Thanh
    • 1
  • Frans Ollevier
    • 3
  1. 1.Mekong Delta Development Research InstituteCan Tho UniversityCan Tho cityVietnam
  2. 2.Vlaamse Vereniging voor Ontwikkelingssamenwerking en Technische BijstandParamariboSuriname
  3. 3.Laboratory of Aquatic Ecology and Evolutionary BiologyFaculty of ScienceLeuvenBelgium

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