Did fear stop me extracting max val?

Fish was playing 64/5 over 25 hands. CB 100%.

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.05/$0.1 No-Limit Hold'em (7 handed)

Known players:
[tg]MP1$12.07:///////;MP2$11.91:///////;MP3$10.00:///////;CO$13.50:///////;BU$11.25:///////;SB (Hero)$10.83:///////;BB$9.30:///////;[/tg]

Preflop: Hero is SB with A:s, 7:s.
5 folds, Hero raises to $0.30, BB calls $0.20.

Flop: ($0.6) 8:h, 3:h, 7:c (2 players)
Hero bets $0.40, BB raises to $0.80, Hero calls $0.40.

Turn: ($2.2) A:c (2 players)
Hero checks, BB bets $0.50, Hero calls $0.50.

River: ($3.2) Q:d (2 players)
Hero bets $2.00, BB calls $2.00.

Final Pot: $7.2.

Results follow:

Hero shows two pairs, aces and sevens(As 7s).
BB shows a pair of eights(8d 6d).

Hero wins with two pairs, aces and sevens(As 7s).