YELLOW TANG

[supersam]

Everytime I turn my light on in the morning my yellow tang has big brown spots on his sides. The spots go away in like a minute. His he scared of the dark? For the rest of the day he looks perfect. My parameters are fine, should I be worried?

 

[Salt Freak]

know as mine do that i think thats just something they do when the lights are turned off are when they are sleeping.