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Updated on September 23rd, 2025
Pet's info: Fish | Unknown - Fish | Female
My fish has got stuck in the filter, I have released her from the filter but she is breathing heavily and has damaged her tail. She’s gone to the bottom of the tank, is not moving or eating. I have put her in a separate tank so the other fish do not bother her. Her tail is red and looks like it’s filled with blood. What can I do to help her?
2 Answers

Answered By Angel Alvarado, LVT
Licensed Veterinary Technician
Published on March 18th, 2018
Answered By Angel Alvarado, LVT
Licensed Veterinary Technician
Published on January 6th, 2019
The best you can do is to maintain pristine water quality and proper temperatures. If she is not a salt sensitive species, you can use plain aquarium salt (NOT table or Epsom salt) as a general tonic. It can reduce stress, improve gill function, treat minor infection/injury and aid in any recovery.
Dissolve 1 teaspoon of salt pr gallon of water in a cup or two of tank water. Gently pour it into the tank. Treat for 14 days then reassess the condition. Perform partial water changes afterwards to reduce salinity. Use only conditioned water that is temperature matched to prevent further stress or shock.
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