I have gone thru all the neon threads and no one answered BettaBuddy's question (Dec.) and now I have the same question:
"the top of my neon seems to be black and he is constanly opening his mouth (chewing-like motion). i don't know what wrong is he getting sick?"
I only got him yesterday with one other neon and an oto. The affected neon hasn't been swimming with the other neon and showed no interest in eating. I read the info on
neon tetra Disease. If it is that, I caught it earlier than some of the noted symptoms so do I need to clean the tank out?---I don't want to risk my other fishes and frogs. I am moving the affected one to a small container (don't have a quarantine tank.)
I would appreciate any feedback! Thanks!
-M