NL25: Bet straight against fish on flush river?

[Mr_Pathetic]

So this guy is a huge fish who I have played with in the past and is capable of just about anything. I think he can call with worse hands on the river and maybe like 25% of the time raise it. He has c/r me AI before when I had TPGK with BPTK so he is capable of stupidity. He has also been known to slowplay two pair and sets on the wrong boards.

Question is can I bet this river for value and what do I do if he raises me. Say I bet $4 and he raises me $12 do I call? Or I bet and he minraises me? Or should I just go ahead and fear the flush and c/c? As far as holdings he can really have anything as he never plays a hand the same.

Full Tilt Poker, $0.10/$0.25 NL Hold'em Cash Game, 3 Players
LeggoPoker.com - Hand History Converter

BB: $40.55
BTN: $22.55
Hero (SB): $26

Pre-Flop: A[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/spade.gif[/img] dealt to Hero (SB)
BTN calls $0.25, <font color="red">Hero raises to $1</font>, BB folds, BTN calls $0.75

Flop: ($2.25) 5 T J (2 Players)
Hero checks, BTN checks

Turn: ($2.25) K[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $1.80</font>, BTN calls $1.80

River: ($5.85) 2 (2 Players)
Hero????

[traz]

bet/fold will get the most value out of weaker hands