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You are here: myPetSmart.com > Pet Care Library > Ask An Expert > Answered Questions > I Have A 5 Gallon Tank Full Of 10 Small Fishes2 Guppies3 Gh

I have a 5 gallon tank full of 10 small fishes...2 guppies,3 ghost catfish,4 glo...

APark

Question: 
I have a 5 gallon tank full of 10 small fishes...2 guppies,3 ghost catfish,4 glofish,i gorgot the other one but one of the guppeis just died..i had 4 glofish but added 7 fish recently..help?
Answer: 

Usually when many fish die suddenly, it is due to poor water quality. The first step is to do a 25% water change in the aquarium, adding dechlorinator to the fresh water. Test the water to see if it has high levels of ammonia or nitrite, which can be toxic to fish. It is easy to check using a water test strip. PetSmart stores also offer free water testing. Regular water changes are necessary for healthy fish; weekly to every few weeks depending on size of aquarium and quantity of fish. Make sure the aquarium has adequate filtration. Also, you may wish to look into a larger tank.