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 ...

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.

The study, based in Singapore, and with authors from Singapore, Australia and France, examined how tank size and furnishings ...

A new study published in Animal Welfare examined how tank size and furnishings impact the behaviour of Siamese fighting fish (Betta splendens), one of the world's most popular aquarium fish.