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 ...

They don't thrive in bowls or vases due to the cramped space and ... or live with non-betta fish in an aquarium of at least 10 gallons, per PetMD. Non-territorial tankmates are best, such as ...

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 ...