$4 NLHE Full Ring: Any help Please? AJ hit on 2nd pair on flop, bet, check and bet off it on river..

$4 NLHE Full Ring: Any help Please? AJ hit on 2nd pair on flop, bet, check and bet off it on river..

TurkeyHat: posts small blind $0.02
DABEST442200: posts big blind $0.04
Dealt to ImpossibleIs [Ac,Jh]
Petrovich36: folds
TexasMu$$em: calls $0.04
ImpossibleIs: raises to $0.12
mack*: folds
66another: folds
Hooker45: folds
volod21: folds
TurkeyHat: folds
DABEST442200: folds
TexasMu$$em: calls $0.08
*** FLOP *** [7d,Js,Qh]
TexasMu$$em: checks
ImpossibleIs: bets $0.20
TexasMu$$em: calls $0.20
*** TURN *** <font color='red'>9♥</font>
TexasMu$$em: checks
ImpossibleIs: checks
*** RIVER *** <font color='red'>2<font face="arial">♦</font></font>
TexasMu$$em: bets $0.70
ImpossibleIs: folds
TexasMu$$em: returns uncalled bet $0.70
***SHOW DOWN***
TexasMu$$em: mucks
TexasMu$$em wins $0.66


First post everyone! Hand probably isnt laid out correctly but hopefully should get the general idea across.
Ive been thinking I should have fired again on turn. Was this my main mistake? Anyone any ideas on what else I should have done? Havent got very detailed stats on villain but he was 53/5/9 for 19 hands previous. I struggled to put a range on him due to lack of stats and his looseness, so couldnt really justify the call on river.
Would appreciate any input.
Cheers
IiN

unknowns i'd probably check back the flop but this guy is probably a fish so id fire the flop and turn