6 Signs of Happy, Healthy Fish

Your fish are happy and healthy when they:

1. Swim actively throughout the entire tank, not just hanging out or laying at the bottom, floating near the top or hiding behind plants and ornaments.
2. Eat regularly and swim to the surface quickly at feeding time.
3. Do not have white spots or blemishes on their body; do not have fins that are torn or ragged, and do not eyes that are bulging (unless you have a Bubble Eye Goldfish).
4. Are expanding their gills regularly -- but not rapidly -- to take in water and oxygen
5. Are brightly colored with vibrant scales
6. Swim in clear, clean, odorless water