Yes, NLS spectrum pellets. I feed mine now Xtreme wafers (since the bolivian rams will steal the NLS pellets). I think mine also ate the coconut threads from the coconut cave.
These will grow slowly until about 2.5-3", then go through a growth spurt, and slow down again once they grow over 4.5-5" (all SL).
They should be ok in the 40g until after the growth spurt.
Supposedly they may eat carrots and sweet potatoes (mine don't); the beta carrotene supposedly will help with the orange color. Hopefully the orange on the tail will stay, but more likely the leopard pattern will take over.