It seems to be working.В For example, it is estimated that the amount of fishmeals in salmon diets has dropped from being 70% of the diet in the 1980, to about 25% in 2017. The purpose of the NOAA-USDA Alternative Feeds Initiative is to identify alternative dietary ingredients that will reduce the amount of fishmeal and fish oil contained in aquaculture feeds while maintaining the human health benefits of farmed seafood. These are provided in the feed through a number of ingredients including fishmeal, fish oil, plants, and animal trimmings. These include vitamins, minerals, amino acids (the building blocks of protein), and some fats. Nutritionists who design feed for fish have to account for about 40 essential nutrients needed by the fish. This feed usually is in the forms of dried pellets, similar in many ways to dry dog food. This feed contains all the essential nutrients needed to keep them healthy and growing. Farmed fish are fed diets specially designed for their nutritional needs.

Feed and grow fish cheat table