realisraeli:The shulchan aruch writes in one place not to eat milk and fish together. Everyone agrees that this is a mistake and it was meant to say milk and meat.
A) Not everyone agrees this is a mistake, see the levush. Also, aside for Maran, Rabbenu Bahya who came before him, assurs for health reasons.
B) Those that claim that it’s a mistake claim it was meant to say FISH and MEAT not MILK and MEAT.