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 fish, or Siamese fighting fish, are among the most captivating aquatic pets. With their striking colors, graceful fins, ...

Scientists have found prized Siamese fighting fish are typically being kept in conditions a quarter of the size they need to ...