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Why are my fish slow and weak from a fungal infection in the tank?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Male

The fish of any breed getting fungal infection in the water tank the fishes get slower and week

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on August 21st, 2017

Fungal infections are usually due to poor water quality. Check the water chemistry, change or rinse filter media, perform a partial water change (use aged or conditioned water that is temperature matched to prevent shock) and treat with an antifungal until the condition clears. You can find an antifungal in the aquarium section of most pet stores. Follow label directions carefully.

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