A9, strange line from opponent

[The Deuce]

Converter isn't working. PP $200 6 max.

Forgot the stack sizes. Hero has about $200, Villain about $180.

Dealt to Hero 9 [img]/images/graemlins/heart.gif[/img] A [img]/images/graemlins/spade.gif[/img]
Everyone limps, SB completes, BB checks. Six players to the flop.

Flop ($12) 5 [img]/images/graemlins/diamond.gif[/img], 6 [img]/images/graemlins/diamond.gif[/img], A [img]/images/graemlins/heart.gif[/img]
Checked to Hero, Hero bets $8. Folded to Villain, who raises to $24. Hero calls $16.

Turn ($60) 6 [img]/images/graemlins/heart.gif[/img]
Villain checks. Hero checks.

River($60) Q [img]/images/graemlins/club.gif[/img]
Villain bets $35. Hero calls.

No particularly helpful reads. Comments on all streets welcome; I'm interested to see what people put Villain on and why.