1st off, this video
http://www.youtube.com/watch?feature=player_embedded&v=w50CWj8J9iQ
Shows the Dovii and Pacu right Next to eachother.
2ndly the largest pacu ever verified was 38''s.
http://www.fieldandstream.com/blogs/fishing/2010/01/world-record-size-pacu-found-dead-florida
Lastly the site that the picture comes from is
fishing-worldrecords.com
It is by far the most reliable when it comes to records.
The site i used, means this............ VERIFIED, with picture, weight and length all VERIFIED by the world record committee. Not some word of mouth nonsense.
So, once again, the LARGEST WILD Dovii (VERIFIED) is 26'' and 13lbs. Anything else is simply estimates, all you would have to do, is post a fish on a tape measure and a being weighed and you can prove it other wise. But until somebody does, that fish is the LARGEST ever to have lived. At least, the largest ever seen by man.
BTW, the largest pacu was found in Florida, so its feral, I believe, so still not really a true wild specimen. It was 38'' and 53lbs. Needless to say, the pacu in the tank are probably close to 30'' and they dwarf the dovii. Sorry to burst your bubble, but facts are facts.