5NL FR ZOOM - AA against fish.

Hand converted with online PokerStrategy.com hand converter:

핸드보기

$0.02/$0.05 No-Limit Hold'em (9 handed)

Known players:
[tg]BU$3.84:///////;SB$5.25:///////;BB$8.83:///////;UTG1$6.77:///////;UTG2$9.44:///////;MP1$4.87:///////;MP2 (Hero)$8.07:///////;MP3$2.45:///////;CO$4.74:///////;[/tg]

Preflop: Hero is MP2 with A:c, A:h.
UTG1 folds, UTG2 raises to $0.10, MP1 folds, Hero raises to $0.45, 5 folds, UTG2 calls $0.35.

Flop: ($0.97) 5:h, 5:s, 7:h (2 players)
UTG2 bets $0.30, Hero raises to $1.20, UTG2 calls $0.90.

Turn: ($3.37) T:c (2 players)
UTG2 checks, Hero bets $2.60, UTG2 calls $2.60.

River: ($8.57) 8:h (2 players)
UTG2 bets $3.50, Hero folds, UTG2 gets uncalled bet back.

Final Pot: $8.57.

He was a 82/17/1.2 fish.

I thought his flush draw got there on the river hand fold my hand disgusted.

If he river were not a heart, can I just go all in for value here against this type of guy?

Or should I put him on a set somehow?