1Fisheries Research Institute (FRI), Tanjong Demong, 22200 Besut, Terengganu, Malaysia, E-mail: ahmaddaudom@yahoo.com
2Institute of Tropical Aquaculture (AQUATROP), University Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia, E-mail: ahmaddaudom@yahoo.com
3School of Fisheries and Aquaculture Science, University Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia, E-mail: ahmaddaudom@yahoo.com