10NL - made straight, river play

[HotdogPoker]

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Hand History converter Courtesy of PokerZion.com

Button ($14.65)
Hero ($21.65)
BB ($2.45)
UTG ($13.80)
MP ($4.55)
CO ($12.20)

Preflop: Hero is SB with K[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP calls $0.10, <font color="#666666">1 fold</font>, Button calls $0.10, Hero completes, BB checks.

Flop: ($0.40) 5[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, <font color="#CC3333">MP bets $0.1</font>, Button calls $0.10, Hero calls $0.10, BB calls $0.10.

Turn: ($0.80) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, <font color="#CC3333">MP bets $0.1</font>, Button calls $0.10, Hero calls $0.10, BB calls $0.10.

River: ($1.20) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, <font color="#CC3333">MP bets $0.6</font>, Button folds, <font color="#CC3333">Hero ???</font>


Not sure if it's entirely relevant but villain is 73/45/3.75 over a tiny sample of 11 hands.

Question: do aggressive villains really min bet like that on the flop and turn? What does this usually mean, monster or air? He bet a bit larger on the river, but now I've made the straight. Can I raise here?