Home Made Fish Food; How To Make A Nutritious Fish Food for Tropical Fish, Goldfish, And Carnivorous Fish

You can make your own supplement for general fish feeding that is high in DL-methionine (an important amino acid in fish nutrition); Start with whole salmon which is an excellent source of carotene for color (frozen or even canned works), frozen peas, hard boiled egg, frozen or FD brine shrimp, duck weed or spiulina powder, and fish oil (cod liver oil works fine). Blend this mixture then add corn starch to the paste to dehydrate. Spread this paste on small strips of foil (or even wax paper if your dehydrator does not get to hot). Make sure you leave room for air circulation.

For a frozen food, substitute the corn starch with unflavored gelatin powder.

For goldfish and koi, add wheat germ powder. Use this formula for African Cichlids, except delete the wheat germ.
For more carnivorous fish increase the whole fish and decrease the spirulina powder or duckweed. Calamari (squid) can be added too for carnivorous fish, but make sure that all the ink is removed from whole squid.
Use this formula for Discus.

For spirulina powder, Spirulina One Flake can be substituted, but since this already a complete diet for many fish, I double the amount of this and decrease other ingredients by comparable amounts.