overpair on the river facing weird bet

[ReverendX]

villain is 20/15 and quiet agressive on the river

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) pokerhand.org hand converter

BB ($101.50)
UTG ($201.50)
Hero ($113)
CO ($107.55)
Button ($104.95)
SB ($44.45)

Preflop: Hero is MP with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $3</font>, CO calls $3, Button calls $3, <font color="#666666">2 folds</font>.

Flop: ($10.50) 3[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $7.5</font>, CO calls $7.50, Button folds.

Turn: ($25.50) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $12.55</font>, Hero calls $12.55.

River: ($50.60) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $34.5</font>,

[Chicago Twister]

looks like valuetown to me, but that doesnt mean youre beat...

[bung]

you're usually beat here I think. 7 is def in his range, and even if its not, he's got you beat w/2pr here.

btw, I think u can b/f turn here if im not mistaken

[orange]

bet the turn here.

[Paul McSwizzle]

Definitely looks like he is trying to extract value. Would he do this with TT? I don't see any other hand you are ahead of.