Believe me, I did not come to London to cook farmed fish. All my fish are wild.
We need to learn how to capture and kill wild fish humanely - or, if that is not possible, to find less cruel and more sustainable alternatives to eating them.
Wild fish are under threat of extinction because they're hunted to feed us. Yet land animals that we farm are under no threat of extinction. Shifting from hunting fish to farming fish - where the farmers have the incentive to keep their stocks healthy - could do a tremendous amount of good for wild fish.
It takes fifteen pounds of wild fish to get you one pound of farm tuna. Not very sustainable. It doesn't taste very good either.
There is no humane slaughter requirement for wild fish caught and killed at sea, nor, in most places, for farmed fish.
Beef should be organic and grass-fed; fish should be wild, not farm raised.
We are also working on the restoration of salmon runs, and we are doing a new process of mass marking with these fish so we can tell the wild fish from the hatchery fish.
Most of the catfish you find at the fish counter has been farmed. Though I usually prefer to buy and eat wild fish, farmed catfish taste cleaner, without the muddy taste of their wild relatives.