Right now I am feeding them an alternating diet of shrimp pellets, Hikari carnivore pellets, NLS growth #00 and wanted to add some more variety to their diet. I try to feed twice a day, but usually it is once at night, and they seem to eat everything. Everyone is healthy and no one looks skinny, so they are eating well

Also, I have some earthworm sticks that I may start feeding them too. Any good?
Any other suggestions for feeding them?