Captain Guiseppe Pennisi shows you the easy way to fillet different varieties of fish.  He uses a long fillet knife, but the Captain told me that using a knife with a wider blade can also work, and might make it easier to follow the bones when you are just learning the technique.

Please make sure your knife is sharp, and be very careful not to cut towards your hand!   Safety first!

How to Fillet a Ling Cod the easy way.

How to Fillet a Rock Fish like a Bocaccio, fast and easy.

How to Fillet a Flat Fish like Petrale Sole