I don't really have a flatting range in SB, it's a hand I'm mainly 3betting or folding but if you think the fish will call a lot it's ok.

River sucks. The problem is that he doesn't rep much as I think he will mostly be 2 barrelling QJ, maybe J8, he probably doesn't check back with TT/99/55/33/T9, I don't think he raises worst for value. The only hands that makes sense are 88 and 76.

But if you think he is aggro and barrels a lot, only 88 makes sense for me as I except him to barrel 76/J8/QJ. That said, I'm not sure it's a spot he will be bluffing a lot because we have strong hands in our range too and you will often see QJ/J8/76/88, but it's a close spot

I definitely call this. He's repping a really narrow range and even if we're beat, it isn't a big of a problem since he'll rarely have that hand anyways (if we only think his range is 88).

'A raise on the river is rarely a bluff,' has been said many times (but obv he knows this as well!). Did you have any reads that he bluffs/bluff raises river? Given that he is agg makes it tricky obv. Also some aggs are more agg on flop, some on river.

I think we have to call. He could easily be doing this with hands like 85s, 98s, 98o, T8s, T8o and we're only beat by 88 which is 1 combo and maybe some straightcombos.

I would 3b pf or fold. As played I'm calling river and expecting to see a 97 or J9 most of the time or similair.