What hand does the fish have?

[FreakDaddy]

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I raise his weak ass blocking bet on the river. The rest looks good but maybe I raise more preflop, like 7$, but im just nitpicking.

Plz respond to the other thread, lets make the bet!

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After I had a better read, I was raising more pre-flop here. I think I would typically raise this river too (against most opponents). Yet when a very passive fish gets even somewhat frisky, like betting the turn, something inside of me shutdown.

When I reviewed this hand I was really shocked. 1) I would always put this guy on a second best hand here 2) My gut hit me hard on the turn call and told me to slow down despite the probabilities that I had the best hand. I mean I don't get it at all really, it makes little 'logical' sense.

I'm trying to track the results of my 'gut' (subconcious mind) being correct. At lives games I'm uncanningly able to listen to this instinct with percision. Online, I don't really have a record of tracking my results.

How would I 'know' to slow down here?