Habitat Betta fish originated from Thailand but can be found in nearby countries such as Malaysia, Indonesia, Vietnam, Laos, and Cambodia.

A tall tank, for instance, encourages a betta to dive down dramatically. Angkatavanich, who’s now been focusing on fish for years, has a pretty good idea of what to expect next.

Betta fish, also called Siamese fighting fish, are small, colorful fish that are native to Southeast Asia and common in the pet trade. In Thailand, people call betta fish "pla kat," which means ...