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Color loss around mouth of Lemon tetras

2K views 0 replies 1 participant last post by  Chilehead 
#1 ·
I have six Lemon tetras and some of them have a small washed out color area just above or below the mouth. There is no fuzzy growth that would suggest a fungus. The fish are fine with healthy appetites. I'm wondering if the areas could be damage from handling at the store, maybe minor scrapes. I've had them for about six months now. I've dosed the tank with both Melafix and Pimafix several months back when I had though it might be a fungal or bacterial infection but it didn't change anything. Does anyone have any ideas what it might be?
 
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