Just a quick

[Alcasrac]

Anyone have idea what my fish doing?
look like eat something from the water.
They are doing once the light go to just blue.
i can’t see anything in the water, but they like.

and i noticed on the last few days not eating that much than before.

 

[my.PsychReef]

Hard to say. But looks like they are eating something like you said. Probably some tiny pods/ or some type of plankton that get released during blue spectrum. As long as the fish is healthy and eating your food then should be fine. Just keep an eye on their diet and eating habits. I don’t keep anthias, so I can’t comment on their diet requirements. Sorry. Cheers!