NL400 River c/r 200bb deep

[JReezy]

Villain is loose passive fish running at 57/10/2.5. hand took place at a 6max table and had gotten down to heads up between us and now it was 3way. he's been calling every c-bet and haven't really seen him raise much, although the turn check minraise he has done three times so far, once with a draw, once with air, and once i don't know. but i was assuming he had mostly air and maybe a draw when he did it on turn.

when i bet river is it with the intention of calling a shove? should i bet more on river?

Full Tilt Poker
No Limit Hold'em Cash Game
$2/$4 Blinds
3 Players
LegoPoker HH Converter

<u>SB: $845.20</u>
<font color="black">UMD Tennis (BB): $794.75</font>
<u>SB (big blind) collected: $559.50</u>

<font color="black">Preflop:</font> UMD Tennis is dealt 3[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">UMD Tennis raises to $12</font>, SB calls $8

<font color="black">Flop:</font> ($24) 8[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, UMD Tennis checks

<font color="black">Turn:</font> ($24) 3[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks, <font color="red">UMD Tennis bets $20</font>, <font color="red">SB raises to $40</font>, <font color="red">UMD Tennis raises to $115</font>, SB calls $75

<font color="black">River:</font> ($254) 2[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, <font color="red">UMD Tennis bets $153</font>, <font color="red">SB raises all-in to $718.20</font>, [i]UMD Tennis...

Edit: Also want to add this is the first river check raise I've seen in 20,000 hands so far at NL400 or in my 100k hands at NL200, either as a bluff or for value and it definately threw me off, especially from from a 55/10.