NEW: Authorized Vet for Cavoy Koi Vaccine learn more Illness in fish is often due to water quality, infections, or environmental factors. Fish that are sick may exhibit redness or changes in the color of the skin or fins, stop eating, or separate themselves from other fish. Fish can be transported to the hospital in a container such as a bucket or ice chest. When you bring your fish, please remember to also bring a water sample, in a separate container from your fish, for testing in our lab.
