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.

For example, considering how easy it would be for a bird with claws to get a little too curious about a fish sibling and ...

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.