An analysis is made of the commonly used practices in the management of warm-water fish. These practices consist chiefly of legal restrictions, such as closed seasons and creel and size limits, and the restocking of waters from hatcheries or with fish obtained in so-called rescue operations. The value of most of such practices seems to be nil when considered in terms of satisfaction to the angler or increased food production. Some supporting evidence is presented. Suggestions for increasing fish production are: The harvesting of fish crops in proportion to species and sizes available; the rejuvenation of senescent lakes by irrigation; the impoundment of new water areas with provision for managing and harvesting the whole crop; and the utilization of abandoned reclamation projects in a similar manner. The judicious use of irrigation and drainage for the purpose of oxidizing pond bottoms, and the fluctuation of water-levels for reducing shore vegetation and thinning out overly dense populations, are also proposed.