Boils/wart like growths on fish

Formulator

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My molly miller blenny has developed some weird looking growths along the base of his dorsal fin. They have a jelly-like sheen to them like you could pop them. Never seen anything like it.

Otherwise the fish is acting normal and eating well. I keep NO3 at about 10 ppm, PO4 under 0.2 ppm. System is 9 years old. Newest fish addition was the molly himself over 2 months ago.

IMG_6318.png
 

ISpeakForTheSeas

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I'm late, but I hope the fish is well!

#fishmedic - also, just for future reference, posting in the disease forum for issues like this would likely get you help faster:
 

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