Straight flush played fishy

[Kimpan]

Ok
this hand didn't feel alright at all.. although the outcome was good, I think it could have been alot better... or could it?
a reraise on flop seems right here?
I don't know why I just called it.. maybe to get more money in.. Seems like a poor play though..
Party Poker 5/10 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with 3/images/graemlins/heart.gif, 6/images/graemlins/heart.gif.
UTG calls, MP calls, <font color="#666666">1 fold</font>, Button calls, SB completes, Hero checks.

Flop: (5 SB) 7/images/graemlins/club.gif, 5/images/graemlins/heart.gif, 4/images/graemlins/heart.gif <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, MP folds, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, UTG calls, Button calls.

Turn: (6.50 BB) 6/images/graemlins/club.gif <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Button folds, SB calls, Hero calls.

River: (12.50 BB) 2/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, SB calls.

Final Pot: 15.50 BB

Results in white below: <font color="#FFFFFF">
SB has 9s 9h (one pair, nines).
Hero has 3h 6h (straight flush, six high).
UTG has 8h Ks (straight, eight high).
Outcome: Hero wins 15.50 BB. </font>

[billyjex]

I think this might be a river C/R. UTG likes his hand enough to raise the turn. As long as he's not passive when a third flush card hits.