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

Unlike other Betta Fish, the Double Tail Betta Fish is breed with a special genetic trait that causes its tail to grow in two lobes instead of one, creating two tails.

Betta fish, also called Siamese fighting fish, are small, colorful fish that are native to Southeast Asia and common in the pet trade.

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.

Unlike other Betta Fish, the Double Tail Betta Fish is breed with a special genetic trait that causes its tail to grow in two lobes instead of one, creating two tails.