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 ...

In a past life, I worked at a pet store, and one of the most heartbreaking things I saw on a daily basis was people who came in, little kid in tow, asking for a goldfish to put in a bowl. Goldfish are ...