I recently got ahold of a L264 Sultan and while trying to figure out what to feed him and I'm finding very conflicting info
Pleco Planet says they are a carnivore
http://www.plecoplanet.com/forum/showthread.php?t=1924
whereas Planet Catfish says they are a herbivore
https://www.planetcatfish.com/common/species.php?species_id=230
besides flakes the tank gets bloodworms, brine shrimp, krill, beafheart, earthworms, tilapia, carnivore pellets, cichlid gold sinking pellets and green beans (not all at the same time)