Neon Tetra Disease?!

#1
I have had my Neon's in my tank for a month now, and they were the first fish I got. I read up on NTD and the fish I think have it only show two symptoms, a little loss of coloration, not much though, and they aren't really schooling. They are going in little pairs, or groups of three. If anyone has had any experiance with this disease, please help.

Could loss of coloration also be a sign of stress, cause some of my Neon's are attacking other Neon's.
 

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