Corn gluten meal, a corn ingredient of the wet milling of corn, is a very palatable ingredient high in protein, energy, methionine and cysteine. Corn gluten meal serves as an excellent protein source. Rich in highly digestible amino acids and containing no anti-nutritional factors, corn gluten meal works as a partial replacement for fish meal in aquaculture diets.

Widely available, actively traded, highly palatable and rich in essential amino acids, solvent-extracted soybean meal represents the gold standard for vegetable protein ingredients. Soybean meal is obtained by grinding the flakes remaining after removing most of the oil from soybeans by the solvent extraction process. A good source of amino acids, soybean meal also functions as a widely-accepted alternative to fish meal in aquaculture diets.

DDGS, a corn ingredient made from the dry milling of corn, is a medium-protein and high-energy ingredient consisting of a grain fraction and whole stillage from the yeast fermentation of grain to ethanol. It contains numerous nutritional qualities, valuable for a variety of animal species. Its unique characteristics also perform well in aquaculture feeds such as catfish diets.