i would like to get some opinions on getting more than one in a 75 gal.i have heard that if you put them in at the same time they'll be alright.if that's the case i could order three from the store and i should be alright?they are such a mellow fish i don't see where they would fight but you always here differant stories.i have a comm, tank with two clowns,lawnmower blenny,pencil sea urchin,firefish,flaming angeland coral shrimp.all my fish are very friendly