Fish farming is a business just like any other, and the growing of the fish is only one aspect, just like the growing of crops is only one aspect of traditional farming.

The farmer also needs to be competent at harvesting, processing and selling the harvest, and in running the other essential aspects of a business, such as the keeping of records, maintenance of machinery and equipment, managing staff, and marketing the product.

It is only if he/she is successful at doing or delegating all these functions will the business be profitable.