Tilapia, Take Two
Aquaculture, as you may be aware, now supplies an incredible 40 percent of the world's seafood, but the practice has gotten a bad rap for several reasons, most of which should not be applied too generally. That's because, while shrimp farming wreaks havoc on mangrove ecosystems, oyster farming is largely benign and, since oysters are filter feeders, can even improve water quality. Similarly, whereas salmon farming and tuna ranching require boatloads of fish meal (ground up fish) and thus represent a net loss in protein, tilapia, being herbivorous, require no such inputs. All of which is to say, if it comes down to a choice between farm-raised salmon and farm-raised tilapia, ... take the tilapia.
As a final selling point, I have it on good authority that tilapia filets are the perfect choice for fish tacos. Andale pues. Vamos a comer!