Hikari sinking wafers and algae wafers, mine also love the hikari micro wafers.
I had some orange "tropical granules" from en ebay seller (famished fish) that's given up and ALL of my fish went crazy for them - wish I could get some more.
Also green lipped mussel pellets go down well as do shrimp pellets, salmon pellets and right now they're chowing down on JMC catfish pellets.