Having colorful pet fish in your aquarium will add a bit of a tropical flair and lift your mood, here are 5 really colorful pet fish species.

If you’re considering adding companions to your Betta’s tank, here are ten of the best tank mates that are known to coexist harmoniously with Betta fish.

Maintenance Betta fish tanks may be small, but ensuring that your pet remains in good health still requires keeping up with cleaning, feeding and monitoring pH levels.

Deep-sea dragon fish may not see the light of the sun, but their vision has evolved rapidly. Some turned from blue-seeing to red, and then reverted back to blue, a new study suggests, and ...

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: Malay ...

BANGKOK (AP) — A Siamese fighting fish with the colors of the Thai national flag has been bought for 53,500 baht ($1,530) at an online auction, possibly making it the most expensive Betta fish ...

Enter Blue Dragon: an all-original game with an incredible pedigree. How Blue Dragon came to be is arguably just as interesting as the game itself.

The blue dragon may be too weak to resist the ocean's current, but it can take on a Portuguese man o'war and even steal its venom.

Scientists found that the fish were gradually domesticated like dog breeds into the beautiful shapes and colors that turn up today in pet stores.

A new species of critically endangered betta fish, or fighting fish, was discovered in a single peat swamp in Jambi, Sumatra, next to an oil palm plantation.