The correct answer is The elimination of catching marine life other than the intended fish.
Aquaculture can be defined as the cultivation of fishes, plants, crustaceans and other marine organisms to fulfill the purpose of food. The main advantage of this aquaculture is to produce the species that is intended. There is no need to cultivate everything that we don't want, only the desired species are grown for the commercial purpose. There is no need to catch the other marine life organisms that are not intended.
