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Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? If you enjoy keeping fish as pets—especially if you have more than one—standard glass ...

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 ...