Is my neon tetra fish sick? I have 6 of them, and one is not as bright as the others?

[Angeltryin2help]

it also is not swimming like the other ones and won't eat i'm worried that it is sick and going to infect the other fish. What should i do?

 

[kathy]

i used to have a neon tetra.it was frightened by the big gold fish so it hid in the gravel and got stuck there.then it died.it was funny...

 

[Iliana G]

Sometimes neons tetras come down with a strange "neon tetra disease" where they pretty much just stop eating, lose color, and die mysteriously. There is no known cure for it, and I have heard of it spreading to other tetras in the group. I would isolate him. Although you could try treating him with an antibacterial just in case, it may not work--but at least you tried. Do could also do a large water change in case it is pollutants causing this.