Apart from all the other "common" foods, we feed our fish dead fish :roll: Now this might seem a little strange but we feed our fish raw cutoffs from freshwater fish like trout or perch.
When we successfully attend to our other hobby that involves fishes (... :oops:) we freeze little bits of trout when it's still fresh. Not all fishes eat this but the ones that do go nuts on it - of the ones we have the ones that like it are Neon Tetras, Danios, Agassizi, Convicts, Lumpheads, Guppies, Melanochromis Auratus and Pearl Danios.
Just my 2 cents
Dan