Does any hand I beat bet here?

[iheartponeez]

Villain is running 38/0/2 over 40 hands

$0.1/$0.25 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$16.30</font>)
Hero (<font color="#0000cc">$32.90</font>)
CO (<font color="#0000cc">$58.75</font>)
BTN (<font color="#0000cc">$16.20</font>)
SB (<font color="#0000cc">$14.40</font>)
BB (<font color="#0000cc">$13.25</font>)

Pre-flop: ($0.35, 6 players) Hero is UTG+1 Q[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img]
UTG calls $0.25, <font color="#cc0000">Hero raises to $1.25</font>, <font color="#777777">4 folds</font>, UTG calls $1

Flop: K[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img] ($2.85, 2 players)
UTG checks, <font color="#cc0000">Hero bets $2</font>, UTG calls $2

Turn: J[img]/images/graemlins/diamond.gif[/img] ($6.85, 2 players)
UTG checks, Hero checks

River: A[img]/images/graemlins/diamond.gif[/img] ($6.85, 2 players)
<font color="#cc0000">UTG bets $3</font>

I imagine that calling on the flop he has to have a K, pockets, or hearts. Once we get to the river, the only thing that I can call against is a broken flush draw, or maybe a weaker ace, right? Is this a fold? Can I really put him on the ace?