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 ...

In rare instances, a female may attempt to help the male relocate ... The males also begin being aggressive toward one another. Betta fish reach sexual maturity when they are around three to five ...

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