While not completely within your control, you can support your betta fish's longevity by choosing the right aquarium ...

The Round Tail Betta Fish has a rounded tail that has a similar shape to the Delta Tail Betta Fish, but it has no straight edges near the ends to give it that same ‘d’ shape.

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: Malay ...

Betta fish are one of the most popular aquarium fish in the world. Here is what to know about bettas, including how long they live.

Scientists found that the fish were gradually domesticated like dog breeds into the beautiful shapes and colors that turn up today in pet stores.

Betta Fish Getty Images How to Help Betta Fish No animal deserves to live its life in a confined area lacking the resources it needs to thrive.

Answer by Kirk Janowiak, wildlife biologist, fish-fancier for more than 50 years: Your fish has some cool adaptations that allow it to know when you put food into the aquarium.

A woman makes a startling discovery when she and a friend went dumpster diving: a box full of live Betta fish from PetSmart.