i am looking at a Inimicus filamentosus or sea goblin . it was love at first "not sight " actually. it was right in front of me and didnt even see it. but i want it! i am told that my clown , fireflys , and damsels will be history. but my rabbit fish will be safe. how aggressive are these fish and are they hearty? i want him but i am new to the sport of salt water aquariums so i dont want to kill it. any advice ?