1. Department of Agricultural Economics and Agribusiness Management, Jaramogi Oginga Odinga University of Science and Technology 40601 Bondo, Kenya, P.O. Box 210
2. Kenya Marine and Fisheries Research Institute (KMFRI), Sangoro Aquaculture Research Center P. O. Box 136-40111, Pap Onditi, Kenya
3. Department of Animal and Fisheries Sciences, Maseno University, P.O. Box Private Bag, Maseno, Kenya
4. Kenya Marine and Fisheries Research Institute (KMFRI), National Aquaculture Research Development and Training Center (NARDTC), 10230Sagana, Kenya, P. O. Box 451