What is a betta fish? Betta fish—also known as Siamese fighting fish—are among the oldest species of domesticated fish. Their ...

According to Fishkeeping World, Dan's right. The site explains that it's not unusual for betta fish to "play dead" or sleep in positions that make them appear lifeless.

Low startup costs and strong demand are drawing more young Malaysians into the colourful world of breeding fighting fish.

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Betta fish, also known as Siamese fighting fish, are often regarded as one of the most accessible and colorful additions to the home aquarium. With their flowing fins, vivid colors, and striking ...

Just like humans, Betta fish sleep at night. "When sleeping, they become still, with their eyes open because of their absence of eyelids. Betta fish may lose their color while sleeping (it's their ...

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 ...