Yellow belly blue tang

[Rmckoy]

Every morning when the lights come on there is some sort of faded colour
Yesterday it was both the blue tang and trigger fish but on the one side of their face .

today it’s only the blue tang .
shortly after lights come on the colour goes back to normal .

why ?

 

[fishguy242]

Sounds normal to me, most fish fade in color overnight.

 

[Rmckoy]

Sounds normal to me, most fish fade in color overnight.

In the weirdest locations .
yesterday was a patch on the side of their face .

 

[fishguy242]

is this new ? just start happening in blotches ? same or different spots ?

 

[Rmckoy]

is this new ? just start happening in blotches ? same or different spots ?

I’ve never noticed it before because I am always gone to work at 5am before lights come on
I’ve been home for the last week waking up with the birds waiting for the lights to come on .

 

[fishguy242]

lets get some expert thoughts here. #fishmedic

 

[Sharkbait19]

It sounds like a normal nighttime coloring to me - some fish will change color in patches.
Does the patch look raised, fuzzy, or white at all? Any off behavior from the tang?

I do see wha looks like the start of HLLE on the tang, but that wouldn’t cause the color change.

 

[Jay Hemdal Verified Community Expert]

Night time color changes would be bilaterally symetrical - the same on the left and right.

Jay