If you’re a fish lover and think you know all there is to this lovely aquatic animal, here’s a shocker: you probably don’t. For starters, no one even knows how many different types of fish there are ...

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.

Bettas have excellent senses of taste and smell, which in fish are essentially a single sense. In only a second or two from dropping pellets or flakes into a betta’s aquarium, the chemicals in ...