Joe... skin and all... if it's been scaled. Otherwise, the scales cannot be digested and can be a bother to "older" alimentary canals.

om... just plain old fishcakes. Soak overnight; pour off water before bed and in morn and continue to soak until before supper; boil 10 to 15 min; 1 # cod to 2 - 3 cups mashed spuds; sauteed onions; fry to brown; salt & pepper as you wish.