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My guppy is inactive, won't eat, and hiding. Is my fish sick?

Updated On September 23rd, 2025

Pet's info: Fish | Tropical Fish | Male | unneutered | 3 months and 9 days old | 0.09 lbs

My guppy has been very inactive and won’t eat. I have another male guppy in the tank with him and he is very healthy. My tanks amonia, nitrate, and nitrite levels are zero. My ph is 7 and my tempature is constantly 78 degrees Fahrenheit. The inactive guppy simply lays on the ground or on leaves, and sometimes he even hides in the drift wood I have in there. I don’t know what’s wrong.

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1 Answer

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Answered By Todd Cecil

Veterinarian

Published on February 12th, 2019

Thanks for reaching out about Sleepy and including photos. Good job keeping the water parameters ideal. Lethargy and sickness can have multiple causes ranging from infectious (bacterial, parasitic) to a metabolic disorder (kidney, liver). If is obviously difficult to collect blood from a fish this small but a microscopic fecal examination might give some answers. Contact local veterinarians to see if they can help. have you tried to feed brine shrimp or tubiflex worms. These might stimulate appetite. Good luck.

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