I feed my Lyretails every other day and they are going strong for a couple years now. They love Mysis, and the various Ocean Nutrition frozen foods. I also feed Cyclopeze once a week and they LOVE that. I did loose a smaller one out of the trio I started with for some reason. Don't worry about light, they are fine with it.
I think Bartletts are a little harder but good starter Anthias. My Bartlett always hid during the day, I almost never saw it and when I tried to add a partner for it, it harassed the newcomer to death.