yes maroons are aggressive, but so are tomatos. as far as maroons go, i love mine. but they do have strange behavior.
like moving all the sand in its spot to another spot.. leaveing it barebottomed in spots and 7 inches high in others
they dont like a frag in there area? they pick it up and spit it across the tank
they bite you and shake like a dog... it shocks you more than hurts but it still hurts lol
They have striking beauty though