In this study, it was aimed to evaluate more efficiently Rainbow trout (Oncorhynchus mykiss) internal organs not consumed by humans and Van fish (Alburnus tarichi, Guldenstadt 1814), which have low economic value. Easy digestible feed for Rainbow trout were prepared that is low cost and similar to natural food. The wastes were processed in an easy way with the semi-wet feed construction method and the product was stored. The chemical analyzes of the prepared feeds were made. Protein, fat, ash, yeast, mold and Mesophilic Aerobic Bacteria values of the feeds were compared. Results of live weight gain and economic analysis obtained from the study; It has been shown that semi-aged feeds made with Van fish and trout internals can be used in feeding Rainbow trout and will reduce feed costs.