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 ...

Bettas are one of the most popular fish species. Most people consider them relatively active, but this isn’t always true.

In pet stores, the popular fish are often kept in small tanks or plastic bags, giving them insufficient space. Read more at straitstimes.com.