I am wandering what kind of aggressive fish i should put in my tank? i am looking for the largest, most aggressive fish i could fit in a 55 gallon saltwater aquarium, i really want something that most people dont have, i really want a grouper or wrasse, i realize most groupers get too large for my aquarium but i was wandering if there was one that wouldnt be too big? i am open to any ideas. thanks for the help.