When a fish go BLACK!!!

[John Kh]

I noticed sometimes that when I turn on the light or even when I reach home at the end of the day that some fish might have a dominant black coloration all over!!! What does that means? Stress? Normal thing? I know that when a fish looses its color, it means she is stressed or uncomfortable. But I have never read about the black coloration. Any help?

J,

 

[Anonymous]

Night time camoflage. Normal for most fish IME.

 

[Anonymous]

Yes, normal. Think of it as their pajamas. Why do they do this? Camouflage, as Anemone says. They don't know your tank doesn't have white-tip reef sharks, they've just gotta do their thang.

 

[John Kh]

Ah good then. i thought it might be something serious or a parasite or maybe some stress. Hope they are sleeping well then Thanks for the help.

J,