The designation and presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO), or of the Network of Aquaculture Centres in Asia-Pacific (NACA), concerning the legal status of any country, territory, city or area of its authorities, or concerning the delimitation of its frontiers and boundaries.

All rights reserved. Reproduction and dissemination of material in this information product for educational or other non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of material in this information product for sale or other commercial purposes is prohibited without written permission of the copyright holders. Applications for such permission should be addressed to the Aquaculture Officer, FAO Regional Office for Asia and the Pacific, Maliwan Mansion, 39 Phra Atit Road, Bangkok 10200, Thailand or to the Director General, Network of Aquaculture Centres in Asia-Pacific (NACA), Surawasdi Building, Department of Fisheries, Kasetsart University Campus, Ladyao, Jatujak, Bangkok, 10900.

For copies write to:

Aquaculture Officer

FAO Regional Office for Asia and the Pacific

Maliwan Mansion, 39 Phra Atit Road

Bangkok 10200

THAILAND

Tel: (+66) 2 697 4000

Fax: (+66) 2 697 4445

E-mail: [email protected]