river decision on a wet board

I would imagine you can cbet this flop high frequency for small size, and your hand has very good equity. Although checking is always an option. I guess x/r is possible also.

River raises are always nutted in my experience, it seems ridiculous but every time I call they just have a super strong hand.

Yatahay Network - $0.02 NL (6 max) - Holdem - 3 players
Hand converted by PokerTracker 4

BB: 156.5 BB
BTN: 202 BB
Hero (SB): 80.5 BB

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A♠ J♦

fold, Hero raises to 3 BB, BB calls 2 BB

Flop: (6 BB, 2 players) K♦ 6♥ T♠
Hero checks, BB bets 2 BB, Hero calls 2 BB

Turn: (10 BB, 2 players) T♣
Hero checks, BB checks

River: (10 BB, 2 players) A♥
Hero bets 9 BB, BB raises to 20 BB, Hero ?

Without reading what anyone else replied, I'd personally check call river something reasonable. We have a good hand but so many hands beat us. AJ here is pretty close to a bluff catcher imo esp given the turn action. As played, I likely fold but not all the time. Unless you're playing against a spewey maniac, river raises are usually the nuts.

I also don't mind you floating flop, as I tend to mix in leading and check calling (esp. vs. more aggressive players).