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Help! Ripped fins and black marks


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  • Regular Member

So I am a mom and my son has had the same 3 goldfish for 3 years.... 2 weeks ago one I noticed had a swim bladder issue. Took him out and put him in a hospital tank. He didn't make it. However at the same time I changed a bit more than half the water and treated the other tank. Now another is in the hospital. His fins are ripped and he is turning black by his fins. I also noticed his gills are a bit inflamed. I would post a picture but I can't figure out how from my camera roll.

I saw on Google fin rot and black spots but I don't think it matches. But like I said I am a mom... No fish expert. 


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  • Admin

Hi and :welcome

I'm sorry to hear about your fish if you can:

Please copy & paste the following form and fill it out to the best of your ability when requesting help for Goldfish Problems:


Test Results for the Following:

 Ammonia Level(Tank)

 Nitrite Level(Tank)

 Nitrate level(Tank)

 Ammonia Level(Tap)

 Nitrite Level(Tap)

 Nitrate level(Tap)

 Ph Level, Tank (If possible, KH, GH and chloramines)

 Ph Level, Tap (If possible, KH, GH and chloramines)

Other Required Info:

 Brand of test-kit used and whether strips or drops?

 Water temperature?

 Tank size (how many gals.) and how long has it been running?

 What is the name and "size of the filter"(s)?

 How often do you change the water and how much?

 How many days ago was the last water change and how much did you change?

 How many fish in the tank and their size?

 What kind of water additives or conditioners?

 What do you feed your fish and how often?

 Any new fish added to the tank?

 Any medications added to the tank?

 List entire medication/treatment history for fish and tank.Please include salt, Prazi, PP, etc and the approximate time and duration of treatment.

 Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus?

 Any unusual behavior like staying at the bottom, not eating, etc.?

"If copy and paste doesn't work for you, quote this post and put your answers after each question."


This will help us to be able to help you out. 🤗

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