Good morning. One of my neon tetras has what I am afraid is Neon Tetra Disease. The fish acts healthy, swims normally, eats fine, but has these whitish patches on his body. It has had these patces for a week or so and I dont see this on any other fish. The 29 gallon tank is about 9 months old and has 18 neon tetras, 6 dwarf neon rainbowfish, plus some breeding cherry shrimp. The tetras have been in there about 7 months without issue. Everything was quarantined and I have added no livestock or plants to the tank for 5 months or so. Water parameters are stable with
30% water changes every 4 days.
I have attached a photo of 2 fish. The upper fish has the patches - lower one seems fine.
I am also attaching a photo of a tiny worm(?) with tentacles that is attached to the front glass. I believe it is harmless, but had never seen one before.
Can someone tell me if the fish has neon tetra disease. And if I should do more than just remove it and hope it did not spread. The tank is heavily planted and hardscaped - not feasible to dismantle.
Thanks for any help you can provide. Bob