My Corys go absolutely bonkers when I give them there weekly frozen bloodworm treat. I can tell it's their favorite of all the frozen. For regular feeding I give them a few sinking shrimp pellets as I'm feeding the rest of the fish. OS.
Bloodworm, sends all fish bonkers!
They (my Cory) will eat sinking catfish pellets, algae wafers,
(Regular) fallen flake, natural algae/diatom growth, bloodworm, daphnia, spirulina flake,
tetra (and other brand) omnivore mix-red mini pellets,
snail eggs and snails (small and infrequently) and whatever else they happen to find!
(In a tank of Cory only, snails go missing! That's my assumption the Cory did it)
(Pre soak the sinking catfish pellets for ten minutes) then the tetra only take a bite and they don't swim off with the whole thing!
The small pieces that fall away, Cory food! I think somebody else said, feed tetra at lights on, then add night feed for Cory/plec etc.
I often trick the tetra to one side with some flake then add bottom feed to another area of the tank.