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Why is my cichlid acting weird, changing color, and has green slime?

Updated On September 23rd, 2025

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

My cichlid has been not acting normal and he he's turned a different color on one side and he has a green slime like tint in different spots of his body

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1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on November 15th, 2017

Check the water temperature and chemistry. The slime could be algae or bacterial overgrowth. This occurs when there is inadequate filtration, overfeeding, too much light or if water is too warm. It cam also happen when there is a lot of plant debris. Perform a water change, rinse the filter media with tank water and adjust temperature and light if necessary. You can also separate the affected fish out to a hospital tank and treat him using a broad spectrum antibiotic and plain aquarium salt (NOT table salt). The antibiotic you can find in the aquarium section of the local pet or fish store. Erythromycin or tetracycline are good options. Follow label directions carefully. Dissolve 1 teaspoon of salt per gallon of water into a cup of tank water and gently pour it into the tank. You can treat with both for 10-14 days. Return him to the main tank once symptoms resolve.

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