Red lumps on goldfish. HELP!

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Livvyk

Aquarium Advice Newbie
Joined
May 16, 2020
Messages
4
Over the past few days my goldfish has grown some red/purple lumps on his head. I’ve tried doing research but I can’t find out what they could be. If anyone could tell me that would be great. I’ve ran out of water test strips and I’m hoping to go and buy some more tonight, so I don’t know my water parameters as of yet.
His skin on his head has also become quite translucent, could that be because of low oxygen ? (I’ve ordered a new air stone and it’s coming today )

He has been in worse water conditions as he was a friends fish and they had him in a 12 litre tank with no filter or anything just tap water. But this is the first time anything like this has appeared on him.

I’m really worried for him so if anyone could help that would be great thanks :)
 
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