I feed the typical PE-mysis and cyclops. I also feed Reef Caviar (a brand of fish eggs), and blender mush. I don't feed any dry foods, or manufactured frozen mixed foods, like Rod's.
At the moment, I only have one pair of perculas that's spawning. The clutches are more than 500 eggs. They spawn about twice a month, but I haven't really kept track. I'm not raising the young either, so???????
You may not believe this, and I honestly wouldn't if I wasn't seeing it for myself, but I purchased a very small pair of picassos. The larger of the two, had a pretty bad under bite. As it's growing, the under bite is getting less, and less, noticeable. I honestly thought this was strictly a genetic trait, and that skull shape was fixed at a very young age. If this change continues at its current rate, the fish probably won't have an under bite at all, by the time it's an adult. The only explanation I can come up with is the good diet. I feed them very well, two or three times a day.
