AQs flatting

Shoving the flop would be fine. Raising would too, but vs fish I might just jam and take my equity. Vs a reg you can barrel them off a J sometimes, but fish will never fold a J on later streets so I just like jamming flop.

Overbet shove on river is quite gross spot, I think I might fold actually, he can have A2s, AA, KT, 99, JJ, QQ, and we block busted spades which are the main hands it makes sense to bluff with. He is fish so his moves dont necessarily make sense, but I would fold the river unless I've seen him bluff a lot.

My thoughts on that sick river is still thinking about the betting size he makes.

Why would you bet/shove all in the river with a value hand you want to get called with ?

I would probably fold on a bet size half pot / or pot bet size that shows me he wants to extract value on the spot

but the more I look at it the more I see it as a fold.

You could also lead out river yourself, that's an option. And fold if he shoves.

Yeah, shoving river for value doesn't make a ton of sense, but he is fish and he might just be really excited about having a good hand

leading river with bet/fold and what are you doing if he made a half pot sized bet or a pot bet ?

I would bet river like 0.65 to get calls from Jx and 9x (he's fish so can call 9x), and would be folding to any raise size.

I would call half pot. Maybe fold to pot. Especially exactly 100% pot, I think this is often a fish bet sizing tell for a very strong hand.

I see where you're coming from with wanting to call the overbet, the flop is super drawy so often that does make a good spot for bluffcatching. However here you have two spades yourself, and also most straight draws either made a straight or a pair on the turn. If he pairs a Q on the turn, with something like QT, I don't see him jamming river with it.

He's 53/50 so its natural to think he has a ton of flush draws in his range, and he does - if he calls. But here he min 3bet you, which from a fish is either (from my experience) TT+/AQ+ or Axs eg A3s. Which means you block pretty much all his flush draws by having the As and Qs.

The only bluffs I can think of are T7s and 87s but they are unlikely to have been 3bet pre I feel. AK is pretty strange and definitely worth making a note of.