Neon Tetra - Mouth Problem

[dazbud]

I have a school of 9 neons in my community tank. One of them has a small white growth under its mouth. Its been there for about 3 weeks now. It hasn't grown and its not stopping the fish from eating. All the other fish are fine and the infected one displays normal behaviour and colour too.

I've had him in a quarantine tank for 3 days treatments twice. Once for a normally course of Esha2000, then a week later for a double strength dose of Esha. It hasn't gone.

I've returned him to the big tank now. But wondering whether I should just destroy him. Any ideas what it is, or why its so persistent.

Its not white spot, because no grains and no other fish affected.

It looks more like a fungus than a spot of growth. But I'm puzzled as to why the fish is still alive and behaving normally and why it won't respond to treatement. Esha2000 is normally good at fungal/bacterial one off infections.

 

[PrairieSunflower]

I haven't ever used Esha so am unfamiliar with it. I have treated a guppy for mouth fungus though with Interpet Fungus and Fin Rot treatment. Took 1 1/2 course of treatment before it cleared. Did the treatment which lasts 1 week as per the bottle... seemed gone but a few days after the treatment began returning so I began a second course and halfway through it went away so I didn't do the second dose during the second week.

That's my experience with mouth fungus anyway!

Maybe you could post a picture in case its not mouth fungus?

 

[WILDER]

Does the growth on the fish mouth look like white fluffy cotton wool?

 

[dazbud]

just to let you know. He's still got it, but I gave up trying to treat, and guess what . . . he's still alive. This is even after jumping out of the tank one day and remaining on the floor for 20 mins until I noticed him when I was cleaning up. The indestructable Neon Tetra !