Villian is 27/5/3.4 over 230 hands with entire AF coming on flop...0 for both turn and river.

Poker Stars
Pot Limit Omaha Ring game
Blinds: $0.10/$0.25
5 players
Converter

Stack sizes:
Hero: $26.75
CO: $43.40
Button: $40.50
SB: $44
BB: $23.85

Pre-flop: (5 players) Hero is UTG with 6 Q 3 Q
Hero raises to $0.85, 2 folds, SB calls, BB folds.

Flop: 5 J K ($1.95, 2 players)
SB checks, Hero bets $0.75, SB raises to $4.15, Hero calls.

Turn: 3 ($10.25, 2 players)
SB bets $9.75, Hero folds.
Uncalled bets: $9.75 returned to SB.

Results:
Final pot: $10.25

WTF?

I check behind on the flop, but I generally play any flush quite slow.

Question: Do you think he's likely to check the turn after checkraising the flop?

I bet pot on that flop, once check raised I let it go. Sometimes I check behind and just call down in position. Might bluff if the board pairs.