I'll bet a few people on this thread will appreciate this. At disney world I snapped this (crappy) pic of an african lungfish in a tank at animal kingdom. The "beast" was massive with a girth that many would have trouble getting their arms around. The length is hard to tell from the pic. The head on the right, the tail extends almost to the left edge of the pic. I would say it would be approaching 4 feet.
Enjoy
Enjoy