Living systems of aquatic plants and animals for exhibition, scientific analysis or decoration, aquariums are balanced when aquatic plants and animals exist in respiratory cooperation. Fish exhale carbon dioxide and eliminate wastes which the plants absorb as fertilizer. Plants use the carbon dioxide and emit oxygen during photosynthesis which the fish inhale. Cooperation exists in this sense. Sufficient daylight, uniform water temperature and prepared fish foods are all that are needed to support most freshwater fish. A large variety of aquatic plants is good for aquariums.

Fish convert approximately 85 percent of what they eat into protein food as contrasted with approximately 10 percent converted by beef cattle.

There are two types of pond construction the dug pond formed by digging a sunken shape out of the earth, and the levee pond made by natural levees or by mechanically digging out a level pond bottom. Levee ponds allow for drainage naturally since they are higher than ground level.

When the pond is fully constructed and the clear water allowed to stand for a week or two, it is time for fish body weight per day; with kitchen wastes, percent of body weight. This formula is designed to produce a 3 percent weight gain per day.

As exothermic creatures, fish are extremely sensitive to temperature, oxygen supply and other environmental conditions.

Size and shape of the fish pool are normally determined by the surrounding environment and desired fish production. For most small fish farming projects, ponds average one or two acres.

Providing a breeding ground for the fish. Many fish deposit their eggs on the leaves of the plants and the younger fish subsequently seek refuge there from their cannibalistic elders. Riccia is especially recommended for this purpose. Aquatic weeds are often a threat to water plant and animal life. In the South, water hyacinth, American lotus and alligator weed have interfered with fishing and aquatic plants. In the West, weed growth clogs irrigation ditches, slowing water flow and increasing evaporation rates.

Others, such as Rodale Resources in Emmaus, Pennsylvania, and the Institute of Local Self- Reliance in Washington, D.C., are innovating in the areas of water filtration, fish feeding and harvesting techniques.

Aquaculture is a post from: The Grow Garden