Fish Finder Screen Size Comparison The graphic below will show you the proportions of different fish finder units’ screen sizes. There are common Apple products added to the graphic to give you a better idea. Enjoy! Look at reviews for fish finders by screen size: 4 inches or less 5 inches Larger than 5 inches Related posts: Cheap Fish Finders – Good Or Bad? How To Read A Fish Finder Screen Humminbird Fish Finder Comparison Chart Which Is The Best Fish Finder For The Money?