Zookeepers have proposed a real “grizzly” solution to controlling giant invasive goldfish. For years, pet goldfish released into US waterways have been wreaking havoc by ballooning to gargantuan sizes ...

Goldfish, as voracious eaters, will devour snails, small insects, fish eggs, and young fish, out-competing native fish. They can also grow over a foot long outside in the wild. (Pictured: A 14-inch ...