For first-time fishkeepers, colorful betta and guppies are affordable and attractive aquarium fish options. Bettas (Betta splendens), native to Southeast Asian rice paddies, and guppies (Poecilia ...

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 betta fish, also known as the Siamese fighting fish, ...

Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to southeast Asia, this species is known for its range of vibrant hues. There ...