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Nature

Betta Fish

What is betta fish?

· Emily Grant

Key facts

Scientific name *Betta splendens*[2]
Common name Siamese fighting fish[1]
Genus *Betta*[1]
Family Osphronemidae[1]
Habitat region Southeastern Asia[1]
Type Small freshwater fish[1]

Betta fish is a common name for fish in the genus *Betta*, most often referring to the Siamese fighting fish (*Betta splendens*), a small freshwater species native to southeastern Asia.[1][3]

Context

Betta fish is a common name for fish in the genus *Betta*; in practice it most often refers to the Siamese fighting fish, *Betta splendens*, a freshwater fish from southeastern Asia.[1][3] The genus *Betta* is part of the family Osphronemidae and includes more than 70 relatives.[1][2] *Betta splendens* is the most common betta fish found in aquariums and pet stores, and betta fish are among the oldest species of domesticated fish.[2] In North America, “betta fish” can refer to the Siamese fighting fish.[4] The genus *Betta* is a group of freshwater ray-finned fishes, distinct from the unrelated koi in both habitat and lineage.[5]

Documented claims

  • The genus *Betta* contains more than 70 relatives. [2]
  • Betta fish are among the oldest species of domesticated fish. [2]
  • *Betta splendens* is the most common betta fish found in aquariums and pet stores. [2]

Related

Angler FishBada ar populära akvariefiskar med distinkta utseenden som ofta diskuteras tillsammans.

Questions and answers

Are betta fish easy to care for?

Betta fish are popular aquarium pets, but their care requirements are not covered in the provided sources.[2]

Can betta fish live with other fish?

The sources do not specify whether betta fish can live with other fish.[2]

What makes betta fish happy?

The sources do not describe what makes betta fish happy.[2]

Sources

  1. BETTA Definition & Meaning — merriam-webster.com (retrieved August 3, 2026)
  2. Betta fish, facts and information — nationalgeographic.com (retrieved August 3, 2026)
  3. Betta Fish: The Dazzling Siamese Fighting Fish - Live Science — livescience.com (retrieved August 3, 2026)
  4. What Are Betta Fish? - Earthpedia - Earth.com — earth.com (retrieved August 3, 2026)
  5. Betta Definition & Meaning - YourDictionary — yourdictionary.com (retrieved August 3, 2026)

Sources last checked August 3, 2026. · More in Nature