An excellent ingredient and feed additive, krill meal is composed of 100 percent Euphausia superba that has been freeze dried and ground into a powder. It is highly nutritious, protein rich and very high in the pigment carotenoid astaxanthin. Krill meal is widely used for feeding larval catfish and increases survival rates and health in trout, salmon, and other finfish. Contains 60 percent protein and is high in omega-3 fatty acids. It is in a powdered form with 80 percent of the particle size smaller than 500 microns. Info from SFBB