Tropical flakes, frozen foods like daphnia, bloodworms, brimestrimp, river strimp, krill, microworms etc.
Veg like peas, broc, cabbage, sproats, spinach, anything green really.
the problem with the flake food that i am using is that the flame gourami that i have keeps eating the food before the neon tetras can get as far i can tell. how can i fix this?