In offshore aquaculture, keys for success include the selection of a good site, a good culture system and the know-how to manage it. The most common reasons for mortality and growth deficiency are related to the quality and management of fry, and the consequent efficiency of management. Control over production systems has to be thorough and needs to be included fully within daily work routines. Daily control forms are needed for the elements being used as well as for those which are stored. Biological control of the species produced, as well as feed management and fish handling also have to be undertaken in a thorough and continuing manner, with properly conducted sampling to determine the quality of the product during its fourteen month growth cycle. Good management and control practices result in cost reduction, improved growth and survival rates, safer working conditions, profitability and commercial prestige.