line check here w/ river check-raise

no real reads but i had a strong feeling he was holding the 7 here, looking back i dont know why i felt that way, after all the only information i had was a turn minibet which can mean anything at this level

PokerStars No-Limit Hold'em, $0.05 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

BB ($4.75)
UTG ($8.34)
Hero ($12.13)
MP2 ($4.76)
CO ($6)
Button ($2.22)
SB ($10.25)

Preflop: Hero is MP1 with http://www.flopturnriver.com/phpBB2/.../smiles/8h.gif, http://www.flopturnriver.com/phpBB2/.../smiles/8d.gif. CO posts a blind of $0.05.
1 fold, Hero calls $0.05, MP2 calls $0.05, CO (poster) checks, 1 fold, SB completes, BB checks.

Flop: ($0.25) http://www.flopturnriver.com/phpBB2/.../smiles/3d.gif, http://www.flopturnriver.com/phpBB2/.../smiles/9c.gif, http://www.flopturnriver.com/phpBB2/.../smiles/7d.gif (5 players)
SB checks, BB checks, Hero checks, MP2 checks, CO checks.

Turn: ($0.25) http://www.flopturnriver.com/phpBB2/.../smiles/7s.gif (5 players)
SB checks, BB checks, Hero checks, MP2 bets $0.05, CO calls $0.05, SB folds, BB folds, Hero calls $0.05.

River: ($0.40) http://www.flopturnriver.com/phpBB2/.../smiles/8c.gif (3 players)
Hero checks, MP2 bets $0.4, CO folds, Hero raises to $1.3, MP2 raises to $4.66, Hero calls $3.36.

Final Pot: $9.72

i think this was wrong to try this here as most of the time they either check around or villian tosses out another minibet. any thoughts or how you wouldve played it differently are appreciated