Friend or Foe? Freshwater Fish Compatibility for a Happy Tank

Written by PetCoach Editorial
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Whether you're thinking of adding a fish to an existing freshwater aquarium, or planning for a completely new freshwater aquarium, there are plenty of aquatic life options to choose from: colorful rainbow fish, gentle swordtails, koi, African dwarf frogs, guppies, eels, barbs, sharks and so many more!

However, there are several factors that determine whether or not each species is compatible or not, including:

  • Water temperature
  • Gender
  • Temperament
  • Diet
  • Size
  • Activity level
  • pH levels

In order to maintain a happy, healthy, friendly freshwater fish community, it's important to ensure compatibility. Use this handy guide to help you choose fish that can live together in harmony.

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