Its a shame, the Dorado is relentless on the tarpon i had to separate them, im soon gettting a 375 gallon tank to move them out of the 120 growout i hope that enough room will allow the dorado to swim his route and not charge fish that get in his way. Would realy like to keep the dorado they are amazing but the only fish he seems to leave alone are the ones that have an attitude like my Tat, wana try Atf's with him.