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 ...

If you have other fish that are not infected, remove half of the water from the main aquarium. Perform a full water change if ...

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.

Betta fish, also known as Siamese fighting fish, are among the most popular freshwater aquarium fish in the world, according to PetMD reports. Native to the warm, shallow waters of Southeast Asia ...