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

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 ...

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.

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