Opponent runs at about 15/6/1.5 after 70 hands.
I was rather active like 29/17/2,5.
Effective stacks 300$.

Preflop:
CO raises to 8, I call with OTB, blinds fold.
Flop (19):
CO bets 12, I call.
Turn (43):
CO checks, I bet 33, he calls.
River (109):
CO pushes 200, I?

I guess most will say to fold here.
The real question: what do I need to call here?
Among the strongest hand that I could have here are JJ, T9, sets (22, 55, 44, 99,TT).

IMO there is close to zero chance that opponent has AA-QQ here.
I would put him on a set, or with this action. I am still unsure if he has any bluff in his range.

I wouldn't put villian on an overpair with this play, I doubt that anyone would value push river with such overbet with only AA. IMO it is a bluff with AK or something close to the nuts.
In this analysis hands 88, JJ, T9, 22 have the same value as bluff catchers.
While 55, 99, TT have more value as they beat a set of 4 here (quite possible holding too).