Betta fish—also known as Siamese fighting fish ... If a female approves of the nest, she turns darker to show her interest. During mating, the male chases the female—sometimes nipping ...

Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to ...

Which betta fish tank is best? Betta fish are a popular pet. Thanks to their bold, bright colors, feisty personalities and low cost, people all over the world are familiar with these small ...