Aquaculture may be an important food source in the future (see above) but much of it is practiced in ways that are unhealthy for eaters, native species and the environment. If GMO salmon is approved, (still pending at press time) it will only add to the list of everything that is wrong with farming carnivorous fish in the open ocean. Don’t replace that salmon on your plate with shrimp. Ever wonder why the shrimp is so cheapat restaurants like Red Lobster?
What can you do about it?
Educate yourself on sustainable aquaculture. In general, only eat farmed fish that are natural vegetarians and only buy from suppliers that are transparent about the origins of their fish.