Forget the small common fish (basically anything you would see at Petsmart), because we can get those from our distributors for next to nothing and the overall profit is next to nothing. The majority of profit comes from saltwater and rare freshwater (rays, aro, etc). This I believe doesn't apply right now, but if you decide to open a store, location is the number one priority and second would be employees who know what they are talking about. I've seen multiple LFS in the area start out great and fall apart mostly because of crappy customer service.