2/4 deep stacked HU rivercall

[w33ktight]

200bb stacks, villain is a fish. His notes are:
limp calls 10x
weak, calls lots of pf raises and cf's flops, cc's with med strength hands
calls me down in rr pot with 2nd pair
I should also mention villain is very passive (otherwise calling here is standard)

I am OTB with 9[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/heart.gif[/img] and raise to $12
Villain calls

flop is K[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img]
He check calls $18

Turn is K[img]/images/graemlins/diamond.gif[/img]
He check calls $39

River is 7[img]/images/graemlins/heart.gif[/img]

He thinks for maybe 3 seconds, and bets pot

fold or call?