How long have bettas been kept as pets?

Thai villagers began selectively breeding Betta splendens for fighting at least 600 years ago, with some historical accounts placing origins as early as the 14th century. Western aquarium keeping began with Paul Matte's import to Germany in 1896. The mass pet trade expansion happened primarily in the late 20th century.

Who discovered the betta fish?

The fish was formally described by Theodore Cantor in 1849 under the name Macropodus pugnax, based on specimens from the Malay Peninsula. Charles Tate Regan renamed and re-described the species as Betta splendens in 1910 using specimens from Siam. Thai villagers had been breeding the fish for centuries before either scientific description.

Why is it called a Siamese fighting fish?

Because Betta splendens is native to Thailand (formerly Siam) and because Thai plakat fighting culture, formally patronized by King Rama III (r. 1824–1851), produced the selectively-bred fighting lineages that are the ancestors of all modern domesticated forms. The English name translates the cultural context of the fish's regional history.

When did betta fish come to America?

Bettas reached the United States approximately a decade after their 1896 arrival in Germany, with early importation by Frank Locke of San Francisco around 1910. The US hobby expanded gradually through specialty fish importers in the early 20th century.

The International Betta Congress, founded in the United States in 1967. It established formal show standards for ornamental bettas and is the primary international governing body for competitive betta showing.

Betta Fish History: 600 Years from Siam to Global Trade

Betta splendens has one of the longest and best-documented domestication histories of any aquarium fish. The Thai plakat fighting tradition predates Western scientific knowledge of the species by at least 400 years. Cantor wrote it down in 1849; Regan named it in 1910; Matte shipped it to Berlin in 1896; the IBC standardized its showing in 1967. Each date is a chapter in a story that starts in 14th-century Thai rice paddies.

This section covers the full documented history across three articles.

The Thai origin: plakat culture

Thai villagers selected fighting males from wild B. splendens populations in the Chao Phraya and Mekong basin rice paddies. The practice is traceable through oral tradition, regional literature references in Thai and Cambodian sources, and the clay jar fragments used to house fighting males individually. Scholars conservatively date organized selection to the 14th–15th century.

King Rama III (r. 1824–1851) imposed taxes on betta fighting, confirming that by the 19th century the practice was organized enough to generate taxable revenue. Hugh M. Smith, the American ichthyologist who served as Siam’s fisheries advisor in the 1920s, documented the plakat tradition in detail in his 1945 Smithsonian monograph, the foundational English-language source.

The plakat morh (fighting form) and plakat cheen (show form that derived from it) are the genetic backbone of everything that followed. See plakat culture for the complete account.

Rice paddies in Phrao district, northern Thailand, with flooded fields and distant hills. — Rice paddies in Phrao, northern Thailand. Wild Betta splendens populations in the Chao Phraya and Mekong basin rice paddies are the source stock that Thai villagers began selecting for fighting ability as early as the 14th century. This agricultural landscape is where the "fighting fish" trade originated. *Photo: Takeaway via Wikimedia Commons. CC BY-SA 3.0.*

The broader 600-year arc from Rama III through the 2019 Thai national aquatic animal designation is covered in From Siam to Splendens.

A Super Yellow PKHM (plakat halfmoon) male, representing contemporary show breeding standards that trace to the Thai plakat fighting lineage. — A modern Super Yellow plakat halfmoon: 600 years of Thai selection plus 130 years of Western show breeding, visible in a single fish. The plakat body plan (short fins, muscular caudal peduncle) is directly descended from the fighting lineage Rama III taxed in the 1820s. The 180-degree spread was added by California breeders in the early 1990s. The color fixation is commercial Thai production for export markets. Three eras of history in one fish. *Photo: Todd Scire via Wikimedia Commons, CC BY-SA 4.0.*

The Western chapter: 1896 to the halfmoon standard

Paul Matte of Berlin imported the first live bettas to Germany in 1896. By 1898 captive spawning was recorded in Europe. Frank Locke brought the species to the United States around 1910. The IBC was founded in 1967, establishing the formal show standards that would drive ornamental breeding for the next 60 years.

The halfmoon standard (the 180-degree caudal spread) was developed by California breeders in the early 1990s. Crowntail emerged from Indonesia in the late 1990s. The modern Thai commercial export industry developed most current fin forms in response to Western show circuit demand, completing a full circle: Thai fish exported to the West, transformed by Western breeding standards, re-imported as show-circuit ideals into Thai industry.

The full Western account is at Bettas in the West: From Berlin to the Halfmoon Standard.

The first Western import: Frankfurt 1892 to Berlin 1896

The first documented live bettas in Europe arrived in Germany in the early 1890s. The Frankfurt Aquarium Society received specimens around 1892, making them among the first Western observers to watch the species alive. Four years later, Paul Matte of Berlin acquired a breeding stock and in 1896 produced what hobbyist literature records as the first captive spawning in Europe. Matte exhibited the fish at the Berlin Aquarium and published accounts in German aquarium journals, establishing the species’ Western reputation as both a curiosity and a viable aquarium subject.

Word traveled fast in the tight-knit European aquarium society of the late 19th century. By 1900, French and British hobbyists were obtaining specimens. American interest followed within a decade. Frank Locke of San Francisco is the most frequently cited early US importer, with records placing his first bettas around 1910 (Seriously Fish). Specialty fish importers on both coasts expanded the hobby through the 1910s and 1920s. By mid-century, bettas were reliably available in American pet stores, and the veiltail form (the drooping, asymmetric caudal that sells at mass retail today) was already the dominant Western form. The fish had traveled from Thai clay jars to American glass tanks in roughly 50 years.

An Alien Metallic Betta splendens showing the advanced iridophore selection that modern Thai commercial breeding produces for Western collector markets. — An Alien Metallic male: a contemporary collector line that completes the full circle described in this history. Thai breeders exported wild-type plakat to the West in 1896. Western hobbyists developed the halfmoon standard and elaborate color morphs through the 20th century. Those standards fed back into Thai commercial production, which now exports show-quality lines back to Western collectors at price points Matte's Berlin aquarium society never imagined. *Photo: StarboundBettas via Wikimedia Commons, CC BY-SA 4.0.*

Primary sources

Primary sources used throughout: Cantor’s 1849 Catalogue, Regan’s 1910 Proceedings paper, Smith’s 1945 Smithsonian monograph, and IBC’s own historical records. Where primary sources conflict or are ambiguous, the text says so.

For deeper research: the Biodiversity Heritage Library has Cantor and early 20th-century aquarium journals digitized. The IBC archives document the Western show-breeding era. Thai academic work on plakat culture is published in Thai-language journals and partially synthesized in the 2022 genetic architecture paper (PubMed 36129976).

The historical strains documented on these pages, traditional plakat, Siamese fighting lines, early Western show fish, are still bred today. If you want to keep a fish with a traceable lineage rather than an anonymous farm import, see where to buy show bettas. Setting one up properly starts with the same basics as any betta: API test kit (affiliate), Seachem Prime (affiliate), proper tank setup.

Frequently asked

How long have bettas been kept as pets?: Thai villagers began selectively breeding Betta splendens for fighting at least 600 years ago, with some historical accounts placing origins as early as the 14th century. Western aquarium keeping began with Paul Matte's import to Germany in 1896. The mass pet trade expansion happened primarily in the late 20th century.
Who discovered the betta fish?: The fish was formally described by Theodore Cantor in 1849 under the name Macropodus pugnax, based on specimens from the Malay Peninsula. Charles Tate Regan renamed and re-described the species as Betta splendens in 1910 using specimens from Siam. Thai villagers had been breeding the fish for centuries before either scientific description.
Why is it called a Siamese fighting fish?: Because Betta splendens is native to Thailand (formerly Siam) and because Thai plakat fighting culture, formally patronized by King Rama III (r. 1824–1851), produced the selectively-bred fighting lineages that are the ancestors of all modern domesticated forms. The English name translates the cultural context of the fish's regional history.
When did betta fish come to America?: Bettas reached the United States approximately a decade after their 1896 arrival in Germany, with early importation by Frank Locke of San Francisco around 1910. The US hobby expanded gradually through specialty fish importers in the early 20th century.
What is the IBC?: The International Betta Congress, founded in the United States in 1967. It established formal show standards for ornamental bettas and is the primary international governing body for competitive betta showing.