Goldfish tumor

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CarpCharacin

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So last year this lady who used to live next door had a goldfish she didn't want, and I said I might take it, I just wanted to inspect and quarantine it before putting it in my pond, but instead of giving it to me to quarantine, she came and put it in my pond when I wasn't home. Now the fish has a tumor growing in it's back. Tumors aren't usually contagious, but I'm thinking about bringing in the fish anyway, I have an empty 40 gallon tank I could put it in.

I have never had a goldfish with a tumor before, how should I treat it? I'm not sure if the tumor is cancerous or not, the tumor looks pretty big. If it is cancerous, I may just have to euthanize the fish.
 
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CarpCharacin

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I ended up removing the tumor on the fish last summer. The fish is still alive, and I don't think the tumor has grown much after being removed, I think it was just a scale tumor. When it warms up in the spring, I'm going to inspect the fish, and if it appears to be growing back, I'll take a sample and look at it under the microscope to see what kind of tumor it is.
 

Professor_fish

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Its a Pseudomonas cyst not a tumor! I will post something on Tuesday about it. tumors in fish dont react like that
 
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