I often feed mine dried banana leaves for variety...
I have also used mulberry leaves...
Ive found zuchini Is best with broken up algae pellets, and small protein pellets
I use a coffee grinder at first and grind to a powder, just for a few days, to get them started
I also add some waste from the parents tank.....gets the bacteria going In their guts...
After a week on zuchini...I throw them all In the grow tank, and they get the same as the parents.....No special treatment just plenty of food, and bog wood. It toughens them up and most survive, plus they seem to grow quicker In the larger tank, and you get a hardier fish when It comes to sale time.
Currently have 1000s of the little beggars, commons, longfins, peppermints and L numbers all in the one large tank
Cheers