"Ball cutter" fish in Illinois lake - Is This What Global Warming Looks Like?

"Ball Cutter" fish in Illinois. Is this What Global Warming Looks Like ?

There are reports about a new fish species found in an Illinois lake: 

The pacu fish might not be as large as jaws, but for men it can be just as frightening.

The pacu is lovingly referred to as the "ball cutter" after killing two men in Papua New Guinea by biting off the testicles of at least two local men.

The fish that sports human-like teeth and can weigh up to 55 pounds, has been spotted in Lake Lou Yaeger in Illinois, KSDK reported.

The lake's superintendent Jim Caldwell brought the fish to the Illinois Department of Natural Resources after initially responding to a report that a piranha had been caught. The lab quickly identified it as a pacu, according to the Huffington Post. There are conflicting reports that a second pacu fish had been spotted shortly after. 

How did a fish native to the Amazon basin end up in a small lake in the middle of Illinois? Caldwell believes they were dumped there and were most likely someone's aquarium pet. 

Or could this be something far more sinister: There are rumors about  AP´s Seth Borenstein being sighted on the lake. Could this be What Global Warming Looks Like?