320px-Rainbow_trout_SNRAby Mollie Liskiewicz, Great Lakes Echo

When a farmed fish escapes its pen, does the rest of the lake notice?

Farmed rainbow trout in Lake Huron may outcompete their wild relatives when it comes to growth and feeding efficiency, Canadian scientists report. But they are left for dead when it comes to long-term survival.

http://greatlakesecho.org/2015/03/10/fish-farm-escapees-grow-fast-but-dont-survive-long/