Im folding here a lot.
I mean he flats pre, he can have a set, 2 pair, flush. His calling hands are gonna be mainly low PP, suited connectors.
When he calls a re-raise on the flop and the straight and flush both get there, we are rarely good enough.

I find fish shove here a lot with a flush because they don't really know how to play them and think as you re-raised the flop your not folding, so they just get it in.