answer:Well, here is steak tartare, and here is salmon tartare. Sure they could be mistaken in looks, anyway. I don’t think the waiter should have been arrested unless he knew before hand that fish could kill the guy. Was that made clear? If not, mistakes like that happens in restaurants all the time. I once ordered a Philly steak sandwich, and I got a Philly chicken sandwich instead. I once ordered a T-bone and got a flat iron steak instead. Stuff happens. We are responsible for ourselves.