All my Corys love Omega Oneshrimp pellets.. They will also eat Frozen foods when it gets to the bottom. Daphnia, Bloodworms. Fluval bug bites are another option. Their fun little "not at all picky " scavengers and will take anything they can get.
They are omnivores and prefer meat much more than algae wafers! I was feeding only algae wafers when I first got mine and they’d nibble a bit and I’d have to remove it after hours. I use sinking shrimp pellets now and they GO AFTER IT. that and frozen brine shrimp. Such a big change in behavior! Very much recommend them.
yes i agree frozen brine shrimp and mysis shrimp. Omega one IMO makes a great line of foods. Frozen, Flakes, Pellets ETC... I don't think you can go wrong with Omega one foods... Thats been my experience anyways.
Everyone has given great suggestions, so I'll just add: If you want to see an absolute Cory feeding frenzy, give them frozen bloodworms. They go NUTS. I defrost mine in a cup of tank water and use a syringe to get them past the Cherry Barbs. They'll go crazy searching for every last one of those sweet, sweet wormies, slurping them up like Cory spaghetti.