I have three of them and I like them very much. They feed very aggressively. Mine eat freeze dried krill, pellets, smelt, shrimp. They are not aggressive towards other fish and they school together. They do better in schools vs alone. They are very fast and have very good eyesight. They are not the most colorful fish, but either is a silver aro. My Tarpon are about 8" and have a bright chrome silver color. I like them and they don't come by that often. Depending on which one you have they get pretty big. I have the Indo Tarpons and I hear in the aquarium they don't get much bigger than 24".