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Fish keeping FAQs


Here are the answers to the questions we get asked the most about keeping fish. You'll be an expert in no time!
I don’t know what’s wrong with my fish, what should I do?

Visit our Fish Doctor to diagnose what’s wrong and identify symptoms similar to those of your fish. Click through the questions and see our recommendations for what to do next.

It is always recommended to test your aquarium water with a product such as our Complete Aquarium Dip Tests, which will highlight any underlying water quality problems. Issues with water quality will often make your fish appear unwell and can lead to outbreaks of disease.

My Fish is floating, what’s wrong?
Why has my fish stopped eating?
Should I drain my aquarium?
What is the Nitrogen cycle?
What is New Tank Syndrome/New Aquarium Syndrome?
What is 'cycling' a fish tank?
How many fish can I keep in my aquarium?
Why has the water gone cloudy?
Why has the water gone green?
Why are my fish sick?
My fish is flicking on the ornaments, what's wrong?
Why is my fish jumping?
Should I remove the sick fish from the aquarium?
What do I do with dead fish?
How much food should I give to my fish?