06-24-2013, 11:02 AM
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Originally Posted by Agent13
My Sunshine peacock is pretty bright during the day but at night he seems to get a very pale coloring. I was never worried about it. I assumed this is a natural defence mechanism because some like to hunt others at night and the brighter the color the better a target especialy since they are from a deeper part of the lake with less lighting(in their natural habitat). What would you say AndrewM21?? Would that be one of the possible reasons? That was a total assumption/guess that I never thought to ask about.
There are numerous reasons for a fish to change colors during the day/night cycle. I'm not sure if you've ever done it (guilty), but, if you have ever left your lights on in your cichlid aquarium for a very extended period of time then you will notice that your males will eventually start to look less colorful, but after a proper day/night cycle you will notice that the color returns. Although, I am not going to go into detail as to why this happens, as it's more than I am willing to type out right now.
At any rate, one of the most common causes of change during day/night would be camouflage, however, that is not the only reason. There are special "diets" that will boost the color of certain fish as well, then of course you have inbreeding/inter-species breeding which will produce oddly colored fish as well.
There could be several causes of the fish changing in this case as we have not been given much information to base it on.