A Bountiful Harvest Still Depends On the Sea These fish are
considered trash fish and will be used in fish meal or possibly
fed directly to species raised in aquaculture farms. The
predominant species raised is shrimp. (Photo © Kieran
Kelleher/Marine Photobank)  While farmed fish and shellfish can
supplement our seafood supply, they can't replace the variety
and abundance of seafood from the wild. Some fish farms still
depend on wild populations to supply eggs or young that the
farmers raise for market. Many fish farms also depend on wild
fish, like anchovies, as food for the farmed species.  Some Fish
are Carnivores  Every year, millions of tons of wild fish like
sardines and anchovies are caught and processed into fishmeal
and fish oil for farm-raised species. Salmon—one of the most
popular farmed species in the world—is a carnivore, eating over
three pounds of wild fish for every pound of weight it gains.
Tuna takes over 15 pounds of feed for every pound it gains.
Developing Alternative Diets  There's goo