This paper aims to analyze the economic structure of milkfish farming in Taiwan. It focuses on the factors affecting efficiency of aquaculture methods. As a result of the study by using various financial assessment techniques on surveyed data, we found that most of the farms could not obtain high rate of return on their investment. Among the types of milkfish farming, the economic efficiency of deep-water polyculture system seems better than that of others. The economic efficiency of milkfish farming could be enhanced through the change of culture type, improvement of marketing channel to stabilize the market price, and the reduce of production cost.
Key words: Milkfish, Farming, Production analysis