Breedable Pet Fish
Second Pets are second to none!
Second Pets Breedable Pet Fish Health
You will get a notice when any fish in a tank can't find food and is > 4% hungry. This gives you a day to give the fish food before they get sick.
Fish turn green when the don't have food to eat and get sick.
Sick fish will recover when the have food. No healing potions are needed.