If you are a fan of spicy foods you may be able to over come the strong taste with a rub with hot sauce or a spice rub. Another way that may or may not work is to soak the fillets in milk for oily fish like larger blue fish this method makes them taste great! Soak for about an hour discard the milk, pat dry the fillets with a paper towel and add your seasoning of choice

I have heard that soaking fillets in a saltwater solution draws the strong taste out. Depending on the fillet it is suggested that you soak no longer than five hours in a mild saltwater (brine)solution.