The aquarium grade fish feeds with 36% crude protein and other wire formulated for either carnivore or omnivore will do fine. Twenty fish started at about 1" also good.
Shorty, to get a different experience with the RES bump up temperature and photoperiod. Also provide a little live eats like meal worms making so fish starting coming up to your hands. That level of tameness help acclimate fish to tank so they more completely settle in.
