With their long delicate fins, betta fish need a tank with low water flow and lots of places to hang out and nap. A 5-gallon tank is ideal for most betta fish, and they should never share their ...

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 ...

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.