Fish pond

A pond ( from Latin vivarium, as much as " busier container " ) is a small perennial pond.

Limnology defines the pond as a natural long-lasting flat waters without inflow and outflow and without a deep layer, as is typical for lakes. A pond is therefore potentially habitable everywhere by higher aquatic plants and also shows no stable stratification. After ÖNORM M 6231 about a pond is characterized as a natural, perennial standing water, in which the light penetrates to the river bottom and allows the growth of green plants. The Austrian Federal Ministry of Agriculture defines a pond as Natural or artificially applied perennial ( year-round ) Still waters without low-light depth zone, the water level is not adjustable.

Flat waters, artificially created and have at least one inlet and an adjustable outflow are called ponds. Shallow water, the temporary lead water, hot pools.

In the vernacular become blurred if the term pond with the pond or with other names. The word pond is more common in southern Germany and Swiss-Austrian space and more common than in northern Germany. There, large flat waters are often referred to as sea (eg Steinhude ). Small -scale shallow water where they are often referred to with certain meanings in as Laken ( Laeken ) or lakes. Also in the southern German area flat waters when they are very large, called lakes; the best known example of this is the only to 1.9 m deep Lake Neusiedl, is actually a (very extensive ) pond and is not a "real" See to the limnological definition.

A special form of the pond is the Heideweiher.