My bluff call on the river: standard?

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

UTG+1 (t875)
UTG+2 (t800)
MP1 (t785)
Hero (t665)
MP3 (t775)
CO (t765)
Button (t1235)
SB (t530)
BB (t785)
UTG (t785)

Preflop: Hero is MP2 with T[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, Hero calls t15, <font color="#666666">1 fold</font>, CO calls t15, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (t57.50) 2[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, Hero checks, CO checks.

Turn: (t57.50) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets t40</font>, BB folds, Hero calls t40, CO calls t40.

River: (t177.50) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets t125</font>, Hero calls t125, CO folds.

Final Pot: t427.50

Results in white below: <font color="#FFFFFF">
SB has Kd Qh (two pair, queens and eights).
Hero has Th Qs (two pair, queens and eights).
Outcome: SB wins t427.50. </font>