Fish farming has often been touted as the solution to our fishery problems. Proponents say that we can grow our own fish and give wild fish populations a break. It sounds good on paper. But as usual, reality doesn’t match expectations. Fish, even caged ones, need to be fed. Carnivorous fish require fish meal (ground up fish) in their diets. And humans are not overly enthusiastic about herbivorous fish as a food source. Fish markets sell Tilapia, a species which can be grown on a diet of algae, but humans still have a major hankering for Wild Salmon and Sea Bass.
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