prawns, bloodworm, spinach, algae wafer, earthworm pellets, green mussel pellets, dried seaweed, cucumber, courgette, tetra variety wafers, potato are what I can remember feeding them.
Lots of other things I haven't tried them on yet but main diet is algae wafer/veg and prawns/earthworm or bloodworm corys love the bloodworms. Only ones that would touch potato would be the common plecs and maybe the bristlenose but they much prefer courgette. L191 will only eat hikari algae wafer for some reason or courgette. Courgette causes lots of fights as every plec likes it.