Sudden growth on guppy tummy

biofish

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???? Help? Please? It’s white and fuzzy.

I’ve seen this on a couple other of my fish but MUCH smaller and it typically kills them. I don’t know what it is or how it spreads. So. Help 🥺 the white fuzz always appears at the anal area and no where else
 
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biofish

biofish

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More information: it’s only happened on a few fish. Only seems to affect my guppy fry. I’m not sure if this is a fungus or that white cotton disease… the white cotton disease Looks a bit different though and in different locations. I’ve had a bit of dying plants in my tank which I just cleaned up today which might have caused it. Are there any medications you would recommend? Should I do a few more hefty water changes?
 

Colin_T

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The fish's intestine has popped out of its butt. There's no treatment. Sometimes it goes back in by itself, other times it doesn't. It's caused by inbreeding and poor genetics.
 
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biofish

biofish

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The fish's intestine has popped out of its butt. There's no treatment. Sometimes it goes back in by itself, other times it doesn't. It's caused by inbreeding and poor genetics.
Even though it’s all fuzzy? And yeah… that would make sense; the inbreeding part. This particular fry was born from a lady I bought from the store and she hadn’t had a chance to mingle with my males yet.
 

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