The document offers a wanted poster for the round goby fish, describing it as a small, sharp-toothed killing machine last seen in the Great Lakes. It has committed crimes such as killing sculpin fish, gobbling up eggs, and eating walleye. It has distinguishing features such as a wide-eyed stare, black and brown patches, and a green dorsal fin. Control methods mentioned include using an electric barrier and chemicals. The reward offered is more fish and better fishing.