Comparative life cycle assessment (LCA) of raising rainbow trout (Oncorhynchus mykiss) in different production systems

► LCA of ES, IS and RAS of rainbow trout production was carried out. ► Feed and use of energy were the main contributors to most of the impact categories. ► RAS showed the largest impact GWP, AP and LC as compare to ES and IS. ► RAS showed the lowest impact on EP relative to ES and IS. ► RAS showed a potential to reduce the overall impact when using a wind energy source.