NL100 Shortlanded: KK Line Check

[bruin]

I'm playing pretty solid and stacked one guy with my KK earlier against TPTK. Hero has 150 and villain covers. Reads on villain are that he is a very weird, unpredictable player. Most likely a fish but still unsure.

Dealt red KK.

Villain limps, I make it 4 to go from CO, BB calls, Villain calls.

Flop comes 7-6-2 rainbow (Pot = 11.80)
I lead for 8, BB folds. villain thinks and calls.

Turn Q diamonds (2 diamonds) (Pot = 27.80)
Villain leads for 12 (???). I call.

River 7 (suit unimportant). (Pot = 51.80)
Villain checks, I bet 1/2 pot.

I'm not sure what to do on the turn here. I'm pretty sure I'm ahead but I'd like to see the river before putting any more money in. Should I be raising this turn?