Illness or normal?

snulma1

New member
Hey guys, looking for a little insight on this situation I'm having.

I had purchased a pair of clowns (true perc, labeled as picassos), they lived harmoniously for 2-3 months, then the larger one started picking on the smaller one to the point of it cowering in the corner. Eventually it got so stressed that when I finally separated them, it was too late.

I then picked up 2 new clowns (also true percs) and placed them in the tank. They all seem to be getting along for the past week, but I noticed something odd the other night and couldn't find anything on it when I searched.

At night, the original perc (bully one) sleeps in the BTA, but the other 2 hover together in a corner. It seems that those 2's color becomes paler then normal at night, while the other remains vivid. Is this a sign of illness, or just a normal sleeping pattern? They are all healthy and eating. My parameters are:

Temp :76.9-78.1
pH: 8.1
Salinity: 1.024
Ammonia: 0
Nitrite: 0
Nitrate: 0

I feed them with cyclopeeze 2x a day and some flakes every other.
 
My wild-caught Black Occy pair will loose the intensity of their color at night. My captive-bred Fancies don't seem to have a color change at night. Maybe it has something to do with captive-bred vs. wild caught. They sound fine.
 
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