Fish is pretty aggressive 50/1 vpip/pfr. I donk flop because i think checkraising is bad vs a fish and he makes way more mistakes this way. Turn i am pretty unsure but since he seems aggressive i like checkraising because i think he will continue at least all pair+gutshots and i get more value from 2pairs. River i am unsure, i though about checkraising again to get value from 2 pairs and busted draws i decided to bet 85% pot. But i think i prefer a checkraise here again. Or bet very small.