Betta splendens) photographed in Lincoln, Nebraska. Also known as Siamese fighting fish, they originally hailed from Southeast Asia but are now popular pets found in aquariums around the world.

It often takes a careful eye to identify the sex of a beta fish. advertisement. The Spruce Pets. How Do I Tell If My Betta Fish Is Male or Female? Story by Shirlie Sharpe • 1y.

Betta fish, also called Siamese fighting fish, are small, colorful fish that are native to Southeast Asia and common in the pet trade. In Thailand, people call betta fish "pla kat," which means ...