9-high flush with 4 on the board, value bet?

[Slim Pickens]

Let's pretend Hero isn't on perma-tilt from getting rivered on three consecutive hands (8 pairs in three hand, no good). 2/4 live game. There are a lot of fish, one fairly bad LAG and one good LAG at the table.

Hero has A[img]/images/graemlins/heart.gif[/img]9[img]/images/graemlins/spade.gif[/img]

good LAG folds UTG, one fish limps, Hero raises, some fold, bad LAG cold-calls, BB (young guy, just sat down) calls, fish calls.

flop (4 players, 8.5 SB) K[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/spade.gif[/img]
BB checks, fish checks, Hero bets, bad LAG folds, BB calls, fish folds)

turn (2 players, 5 BB) 2[img]/images/graemlins/spade.gif[/img]
BB checks, Hero bets, BB calls

river (2 players, 7BB) Q[img]/images/graemlins/heart.gif[/img]
BB checks, Hero ???

From what I've seen so far, I think I have to call if I'm raised.