Like said it takes about 5 pounds of forage fish to produce 1 pound of farm fish. I am not sure what it takes in forage fish to produce one pound of wild fish but I'm sure that mother nature has far less waste. An example would be if ocean conditions change and there is a depeltion of forage fish due to warmer ocean conditions then our worlds higher food chain fish such as salmon shortly follow the same path and their numbers naturally decrease untill ocean conditions change again for the better. Mother nature on its own knows how to take care of its self. Fish farming is artificial as it does not care about natural cycels and forage fish will be searched out even in down cycles to feed a shrimp or salmon industry that can remain stable year after year. With little or no restrictions on the commercial forage fish industry world wide then bad ocean conditions will be even more harmfull to wild fish populations than normal because scarce forage fish means higher prices for them and that may mean longer hours commercials fish forage fish but they will because of the higher prices.