Im fairly sure its a jam, we have pretty much the most resilient hand multiway, call/fold is out of the question on the flop, call/call is just allowing him to see another street with parts of his range, that freerolls
us a bit, hands that would have called and lost fold turn, hands that would have called and won call turn. so i prefer jam, he is a fish with an absurd 3bet (over a tiny sample so check if he has ever squeezed)
but if he is going to bet/call off hands as weak as AT/AJ this is a pretty clear value jam, even better if he calls with weaker flush draws (bigger ones suck a bit for us but thats ok)
given your reads will he call with Tx hands to a jam.
v a calling range of TT+ J9+ T8s T9+ A5cc+ 98cc 78cc 67cc 68cc we have 63% equity and will still fold out alot of hands that have some equity against us.
thats 15% of hands, so if he 4bets anyway near the clip he has been, then we get folds from him well over half the time. and have good equity in the side pot.
if he folds Tx hands then we still have 62% equity
if he only calls with AJ+ and only nut flush draws then we have 56% equity.
to make this a call in my books we would need him to call with hands that would fold and have us profit from it, or have some kind of edge on later streets with a dry side pot and multiway all in players, which im not convinced even a agg fish messes up that often.
if ignored the other players becasue CO is folding basically always, and we have so much equity v the shove that its a trivial dont fold spot.