I've never done it. Haven't caught a fish since I've had chickens. Gonna fix that soon. I was warning a BYCer about too much fish when this guy popped in. Over time we've become friends. But he's up in Alaska and Fish is a primary protein source for his family. We limit fish meal to 5% in our feed blends to avoid the eggs becoming fishy. Water fowl that have natural access to ponds can sometimes produce fishy tasting eggs as they're eating small fish from the pond.