Whole fish may be high in protein and fat. It is generally processed using heat or pressure to produce fish oil and fishmeal. The fish is cooked at about 90°C and then passed through a screw press where liquids are removed, resulting in a high-protein meal. The final meal is dried to 10% moisture and generally ground. Fishmeal processing was common in the USA during 1970s–1980s; however, the process has moved to other countries. There is little fishmeal manufacture in USA, owing to issues with odor in the surrounding environment. In addition, the by-products and effluents from rendering facilities have been subjected to restrictions from the EPA.