My LFS always seems packed. That being said most are there for simple food or freshwater fish. Most of the corals have been there quite a while. As the business owner of a different field I'd have to agree with the above post. If I were to try and start an aquaculture business, online would be the way to go. Raising livestock can be done in the comfort of your own home and shipped from there also. With a commercial business you have insurance costs, building maintenance and all the bills that come with it. Owning a building zoned as commercial isn't cheap and has lots of things your local municipality would love to take your money for. On the other side if you can set something up on your own property and start a simple LLC or DBA then basically everything at your home becomes a tax write off.