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A hatchery can be established in any climatical condition as long as the required rearing conditions can be adequately provided. However, all the commercial hatcheries take full advantage of nature in terms of energy source and supply of good quality water. Sunlight is the basic requirement for hatchery operations especially in the mass production of natural food used as feeds for the growing shrimp larvae. In the temperate region where adequate sunlight is only available in certain periods of the year, hatchery operations are usually confined to a certain suitable season. In such situations, hatchery production is relatively limited to a short period of time. On the other hand, the tropics is endowed with warmer climate with adequate sunlight all year round and has ideal climatic conditions f or hatchery operation especially for many warm water species such as the tiger shrimp, Penaeus monodon, the white shrimp, Penaeus indicus which spawn all year round. The optimal temperature for hatchery design may be necessary in areas where there are pronounced long periods of rainfalls which often reduce the intensity of light, and cause turbidity in water supply and lowering of water temperature (Kungvankij et al., 1986).
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