Cory's Paling?

Archangel

Plecos, Plecos, everywhere
Apr 7, 2004
230
0
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Oklahoma
www.homestarrunner.com
I have two peppered cory's that are both young (less than an inch long, only had them a month). Today I was looking at them, and one is quite pale in color. It's spots are still discernable, but not nearly as contrasted as they used to be. This is a very recent change, and I was wondering if this is normal, or if this is a sign of sickness? Any info would be helpful.
 
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