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Why is my fish not eating, has yellow poop, and a growth under eye?

Updated On September 23rd, 2025

Charlie is not eating anymore. I fed him yesterday morning,after school, and just now and he is not eating he has a poop hanging from his but but it is yellow not clear I am very worried because he is very special to me I think you relate to how I am feeling also he has a groth under his eye

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on May 4th, 2018

Check the water temperature. Low temps can affect appetite and digestion in fish. Angels do best between 78 F and 80 F. You can soak food in garlic juice to stimulate his appetite. Next, check the water chemistry. This can be done using a home test kit or by submitting a water sample for testing. Most pet stores will do this for free or for a small fee. Confirm 0 ppm ammonia and nitrites with nitrates at 40ppm or less in a tank with live plants or 20 ppm or less in an unplanted tank. Partial water changes can be done, if indicated, to stabilize chemistry and/or maintain water quality. use only aged or conditioned water that is temperature matched to prevent stress or shock. Although they do best in slightly acidic and soft water, they are quite adaptable. Fast him for 2-3 days then feed bits of cooked and shelled green peas. if he is constipated then this should him him get regular again. A broad spectrum parasite medication, such as PraziPro, should be considered. You can find it in the aquarium section of the local Petco. Follow label directions carefully.

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