Final table fish?

[pokerplayer1]

Is Yang a massive fish. I read the summary on PokerListings and it looks like Yang is a complete fish/calling station. Is my assumption correct?

Which players at the FT were not fish?
Watkinson and Kravchenko?

I don't understand how fish can get to the FT of a 6300+ man tournament. i would expect the FT players to be much better than the average player.

the fish might win 1, 2 or even 5 lucky hands but that's not enough luck to reach the FT or win the ME. what's going on?