1. Department of Aquaculture Research, Kenya Marine and Fisheries Research Institute, Kisii, Kenya
2. Department of Freshwater Research, Kenya Marine and Fisheries Research Institute, Kisumu, Kenya
3. Department of Fisheries Research, Marine and Freshwater Research Institute, Hafnarfjordur, Iceland
4. Department of Aquaculture Research, Hólar University College, Sauðárkrókur, Iceland
5. Faculty of Biosciences, Fisheries and Economics, UiT the Arctic University of Norway, Tromsø, Norway