Monster was originally formulated for monster fish. Large oscars, pike cichlids, arowanas, green terror, peacock bass, jaguar cichlids, Bichars and many others. This large pellet used sustainable marine proteins from Squid, Fish and Shrimp and Spirulina and Wheat Middlings to provide a balanced diet for these hardy eaters. And guess what, aquarists report to us that Monster pellets are great for small fry. Drop a single pellet into a tank of fry and they can munch on it all day. When it dissolved, just suck any remaining pellets out and keep your tank clean.