Whois & Analysis for fishkeepingworld.com

Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond.

There is also a piscicultural fishkeeping industry, as a branch of agriculture.

Fresh water is naturally occurring water on Earth's surface in ice sheets, ice caps, glaciers, icebergs, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams.

Fresh water is generally characterized by having low concentrations of dissolved salts and other total dissolved solids.

The term specifically excludes seawater and brackish water although it does include mineral-rich waters such as chalybeate springs.

The term "sweet water" (from Spanish "agua dulce") has been used to describe fresh water in contrast to salt water.

The term fresh water does not have the same meaning as potable water.

Much of the surface fresh water and ground water is unsuitable for drinking without some form of purification because of the presence of chemical or biological contaminants.

In biology, a species (abbreviated sp., with the plural form species abbreviated spp) is the basic unit of biological classification and a taxonomic rank.

A species is often defined as the largest group of organisms in which two individuals can produce fertile offspring, typically by sexual reproduction.

While this definition is often adequate, looked at more closely it is problematic.

For example, with hybridisation, in a species complex of hundreds of similar microspecies, or in a ring species, the boundaries between closely related species become unclear.

Other ways of defining species include similarity of DNA, morphology, or ecological niche.

The tropics are a region of the Earth surrounding the equator.

They are delimited in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S; these latitudes correspond to the axial tilt of the Earth.

The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone).

The tropics include all the areas on the Earth where the Sun is at a point directly overhead at least once during the solar year (which is a subsolar point).

Saltwater fish are fish that spend some or all of their lives in salt water such as oceans or salt lakes, generally with a salinity of more than 0.05%.