NL 4 AJo bu vs fish in sb

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.02/$0.04 No-Limit Hold'em (6 handed)

Known players:
[tg]BB$3.85:///////;MP2$4.13:///////;MP3$1.90:///////;CO$2.00:///////;BU (Hero)$4.35:///////;SB$3.78:///////;[/tg]

Villain: 56, 21 AF : 1,6
On the turn I called a raise because I had a draw to nut flush, is it better to raise against a fish?
Is on the river maybe better to place a small value bet?

Preflop: Hero is BU with A:h, J:s.
3 folds, Hero raises to $0.12, SB calls $0.10, BB calls $0.08.

Flop: ($0.36) A:s, 9:h, 2:h (3 players)
SB checks, BB checks, Hero bets $0.26, SB calls $0.26, BB folds.

Turn: ($0.88) K:h (2 players)
SB checks, Hero bets $0.48, SB raises to $1.28, Hero calls $0.80.

River: ($3.44) 5:d (2 players)
SB checks, Hero checks.

Final Pot: $3.44.