Guide Note

Fishkeeping, the hobby of keeping and maintaining fish as pets in aquariums, is the second most popular hobby in the United States next to stamp collecting.

Humans have been keeping fish since the twelfth century, when goldfish became popular pets among royalty in China.

All aspiring fishkeepers are encouraged to do extensive research and evaluate their fishkeeping goals before taking up this fascinating and potentially rewarding hobby.

Fast Facts

1. Fishkeepers are also called "aquarists"
2. Estimated 60 million aquarists worldwide
3. 40% of U.S. aquarists keep more than one tank
4. Water treatment and maintenance are important in maintaining a healthy tank

Although seemingly easy, fishkeeping can become time consuming and costly, depending on what size and type of underwater environment the aquarist aspires to create. A beginner must not only purchase the tank, but also the heating, filtration, aerating and lighting systems equipment. Plants, substrate, live rock and coral may also be necessary for more advanced systems.

Technological advances have made it easy to recreate many different types of underwater ecosystems, from the simple goldfish in a bowl to the recreation of an entire reef system.

Most home aquariums fall into three major categories: Freshwater, saltwater and brackish, which stimulates an environment of mixed salt and fresh water. Within these general categories are many subcategories, such as reef, open ocean, tropical or cold water.