Hello, today I played this hand vs 38/29 fishy player. (I should went little bit bigger on the turn)
How should I play this river - it is not best for us but it completes one card flush for him?
x/call, AI?

PokerStars - $0.05 NL (6 max) - Holdem - 6 players

UTG: 146.4 BB
MP: 91.4 BB
CO: 100 BB
BTN: 85.6 BB
Hero (SB): 111.8 BB
BB: 100 BB

Hero posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has Kh Ah
UTG raises to 2 BB, fold, fold, fold, Hero raises to 9 BB, fold, UTG calls 7 BB

Flop : (19 BB, 2 players) 4h 6h Th
Hero bets 7.2 BB, UTG calls 7.2 BB

Turn : (33.4 BB, 2 players) 2d
Hero bets 19.2 BB, UTG calls 19.2 BB

River : (71.8 BB, 2 players) 2h
Hero ???