Try this link
http://www.ext.nodak.edu/extpubs/alt-ag/tilapia.htm
I know this had been hashed and rehashed but to just throw less food that contains more protein is not an effect way to raise larger fish. The younger fish that need the elevated protein levels are going to be shut out by the larger fish. More protein cost more money so there would probably not be a cost savings either. Here, a bag of 32% protein costs $1 more than 30%. Then there is the question of what kind of protein are you throwing, fish, mammal or vegetable? Do you feed once a day, younger fish probably need to eat more often than older fish. I think the question is to broad for a definitive answer.


1/4 & 3/4 acre ponds. A thousand miles from no where and there is no place I want to be...
Dwight Yoakam