Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to southeast Asia, this species is known for its range of vibrant hues. There ...

What is a betta fish? Betta fish—also known as Siamese fighting fish—are among the oldest species of domesticated fish. Their scientific name, Betta splendens, combines two languages: Malay for ...

We may receive a commission on purchases made from links. There are over 70 species of betta fish, with the most common pet varieties being the crowntail, delta, double tail, and halfmoon. Betta fish ...