Villevari has just recently managed to catch one, so contratulations to that! But not only that, he also has the current world record for Shark. And the shark is a really rare catch! The reason for that is that it can only be caught on meat in the Boat On Sea Tournament.
On a side note I just saw the highest price on a fish in the Fish Market that I've seen so far. It was for my Atlantic Wolffish that I caught last week. 104 fishbucks, not bad for one fish! =)
Have fun! =)