I saw that video as well, I wish people would stop and realize the damage that they are doing by releasing these fish into non-native habitats. There was a story on the news last week about a 13 inch pacu that was caught in Utah Lake, and that is at least the second time somebody has caught a pacu in that lake.
i heard about something like that happening. someone had released a pacu because it got too big for his aquarium. then someone found it and thought it was a pirahna and the lake was closed down to vacationers! those people obviously didn't know anything about aquarium-fish
if you go to CNN and find the Watch Free Video section, you will see a link that says "More most watched video." Click on that and find the video titled "A toothy fish."