Suitable Live Weight for Transferring Rainbow Trout Oncorhynchus mykiss (L., 1758) (Actinopterygii: Salmonidae) from Concrete Ponds to Earthen Ponds for Faster Growth and Better Feed Performance

###EgeUn###Growth rate and feed performance were compared between rainbow trout fry with an average live weight of 2.01 +/- 0.02 g, which were transferred to earthen ponds at 10, 50 and 100 g average live weight and rainbow trout grown in a concrete pond. The best average weight gain was obtained in the group that was transferred to earthen ponds at 10 g average live weight (P <= 0.05).The feed performance of the fish that were transferred to the earth ponds at 10 and 50 g were statistically significantly different from the control fish and the ones transferred at 100 g average live weight (P <= 0.05).Turkish Scientific and Technological Research Council' Industrial Research and Development Program (TUBITAK-TEYDEB) [7130636]This study was supported within Project no 7130636 of the Turkish Scientific and Technological Research Council' Industrial Research and Development Program (TUBITAK-TEYDEB). The author thanks Onder Aquaculture Company Ltd. where the study was performed