Ew, fish. Yucky! Those are three words you should never say in front of people if you want to keep any of their respect. You may have to gut a fish just to impress a girlfriend's father on a fishing trip, or you might be stuck on a deserted island. The only alternate course is to claim that you eat all of the fish, cook it whole, and have at it. I'm not 100% sure, but I'm going to guess you're not supposed to eat the intestines without some sort of special bleaching process. Then again, I don't know because I stay away from intestines.
This is putting a lot on you men, because it takes sushi chefs decades to get to this point. You don't need to be as masterful as a sushi chef, but at least know how to do it.