2 of my Apistogramma Agassizii's lost their colors

[snapper]

I have 2 of my Apistogramma Agassizii's that lost their bright yellow colors and they are getting quite dark. My other Apisto's still have their color and they swim healthy. Can anyone please explain why?

Thanks

 

[apistobob]

It sounds to me like they are getting ready to spawn. They often lose their yellow and get rather brown or a little greenish in the day or so prior to spawn.

Bob