Excellent for your large freshwater and marine tropicals. Contains astaxanthin, a carotenoid that brings out the color of your fish. High in essential fatty and amino acids. All Freshwater Cichlids, Loaches, Eels, & Catfish and all Saltwater Groupers & Eels. Crude Protein Min 61.80% Crude Fat Min 20.63% Crude Fiber Max 2.41% Moisture Max 1.57% Info from San Francisco