A Simplified Approach To Keeping Your Goldfish Healthy

Goldfish are susceptible to diseases when they’re integrated with other fish.


Some of these diseases are infectious, others may not be. Keeping your goldfish healthy can be challenging, and even the most experienced have problems from time to time.


Being aware of changes in the behavior of goldfish and acting early to identify the cause is the key.

water change tutorial for fish tank

water quality is vital for healthy fish to thrive

Regular aquarium water change

When caring for goldfish in a tank, maintaining a healthy environment for the fish is vitally important and regularly changing the water essential. See water change tutorial at base of this post for step by step guide .

Isolate sick goldfish

If you think your goldfish might be sick you need to isolate it as soon as possible.


Place the goldfish in a separate container (hospital tank) and set it up as you would an aquarium with proper filtration as well as an aerator.


Don’t put gravel or plants in the container. The container doesn’t have to be very large. The size of it depends on the size of your goldfish and the number of fish stricken with the disease.

Why is isolating your sick fish important?

  1. Avoid spreading the disease to other fish in your aquarium. Fish diseases can be infectious and you need to determine the cause of your fish becoming sick.
  2. Sick or frail goldfish will be attacked or ‘picked on’ by the other fish that are healthy. Goldfish have a reputation for not being very supportive of their kind.
  3. It’s easier to treat a sick fish that’s isolated and monitor it’s process.

Once you’ve determined the reason why you have a sick fish you need to implement treatment such as changing what you’re feeding them.


Be careful of food with medication in it. You won’t be helping the goldfish if you give it too much medicine, so feed and medicate it separately.

Keeping your goldfish healthy and common problems

The good news is that when goldfish start off healthy they usually stay that way. However when they do get sick it may be caused by one of these factors.

  1. overwhelmed by a bad water system
  2. a quick change in temperature
  3. a change in lighting

The issue can be caused by one or a combination of these issues. The bottom line is these conditions don’t agree with the fish and can be detrimental to their health.


Keeping your goldfish healthy very much depends on maintaining their fish tank water in proper condition. This will avoid future problems.

Water Change Tutorial

The water change tutorial below is a good demonstration of how to maintain your aquarium water.


These are items you’ll need when changing your tank water. You can click on the link to find the best prices on amazon. 

Regularly changing your aquarium water will ensure you’re on the right path to keeping your goldfish healthy.

We recommend this video and thanks to the creator for sharing her passion with us.