1. Department of Fisheries Science, Faculty of Natural Resources University of Kurdistan Sanandaj Iran
2. National Institute of Aquatic Resources Technical University of Denmark, Kemitorvet, Byg. 202, 2800 Kgs. Lyngby Denmark
3. Billund Aquaculture Montanavej 2 DK‐7190 Billund Denmark
4. School of Fisheries Aquaculture and Aquatic Sciences, Auburn University Auburn AL USA