How to Grill a Fish That Is Healthy and Good For Dieting Ever wanted to try and cook a grilled fish but don't know how? Don't worry, anyone can grill a fish. Grilling a fish is easy. All you need to do is read these easy steps on how to grill a fish. Frying is different than grilling, frying is good but the fish can absorb unnecessary oils that can ruin your diet plan and is unhealthy to eat often. Grilling the fish can be difficult to prepare but once you get the hang of it, it can be easy.