This is Zoom hand.

UTG is a fish but I have no hands with him. He had that stack, played one entry and limped in. Pretty clear imo.

CO is honest playing reg, cbets a bit too much imo (73%), seemed positionally unaware, raising close to the same range from EP to CO of 20-22%.

Calling looks best given blinds were not 3betting too much.

I did consider betting here but I think with this little equity I can bet turn since fish will be fairly honest while CO is often giving up here unless he improves significantly on the turn. With 73% cbet I can't see him having a check/calling range here, especially with the fish in the pot against whom he'd value bet a lot.

UTG can call 6x, 5x, 44, A4, 89 and all that sort of stuff. When it comes to CO I think he usually has a middle pair, very weak Jx like J8s he iso'ed, maybe 76, 86, 75 type hands since they have a pair + draw, thus reasonable equity. I am very surpised CO called at all. I think it's mostly hands that improved on the turn, otherwise he would have cbet flop a very high frequency imo.

The river question is to bet or not to bet? I expect them to have a weak and capped range. My hand is also close to dead bottom of my range probably. Would you bluff this specific hand? What other hands would you have in your range both for value and as a bluff? What do you expect the worst hand that calls to be?