Aqua Farming can be undertaken on a full time or part time basis. Many successful individual farmers started farming fish on a part time basis and gradually developed full time commercial scale farms after gaining experience and developing resources. Starting a hobby aqua farm is a great way to gain experience and to determine if aquaculture is indeed a business/career choice you wish to make.
Small scale aquaculture requires considerable less investment than a full commercial operation diminishing your financial risks during the development and learning stages. Unless you have good training, farm management experience and strong cash reserves, look closely at starting small and testing the waters first.
The above is an exert from series of articles offering guidelines for evaluating Aquaculture as a buiness. The full articles can be found here.