Yeah I always keep my water as clean as possible but it still like thatman that it swollen! I don't know what it is but I'm no expert. At the very least you should make sure you keep your water as clean as possible to help deal with any existing infections and/or prevent any future infections. Gonna tag a couple of the poly-gurus here, they'll know more
If it's type of growth, so you mean it's normal? I bought with a normal anal fin but after like a year it became like that..Watch for any redness to that area. Seen a few were the anal region got swell and red in a few hours and the poly died. Seemed to be infection. Not sure what triggered it.
But if there's no gravel in the tank and it's acting normal. I suspect some type of growth.
He just ate goldfish, shrimp, and sometimes pelletsIve never seen this before, what did it ate before it became like this?
Yeah its CB. But, will he be alright?It's most likely a tumor. If it's CB.