Why did my acans turn green ?

[Agu]

Had them under several different lights but after "upgrading" to a panorama fixture they turned green... not even a hint of the original red. It's a 5.5 gallon btw .....

 

[RokleM]

Very interesting Agu since that's typically the opposite. Many of the acans IMO when flooded with light loose a lot of their colors and go mostly red. Typically I'd say that they're under less PAR, but that's not the case here correct?

 

[seapug]

I've seen my acans go through many color shifts when I've upgraded lights or rearranged the tank in a way that gives them more light. I have one colony that did exactly what you are experiencing-- had strong red & green contrast when in the shade, but turned all green when exposed to more light. My guess is it's just case of regular old photo-adaptation.

 

[Agu]

Guess I'll have to down grade the lighting .