If they become super aggressive such as ripping your hand apart when you put it in the tank? Could that mean that they are at the stages of laying eggs?
Its funny because everyone always says how Maroons are so aggesive and will bite hands but Ive had my for a year and never a nip. *knock on wood* Granted, I try to avoid bothering him and putting hands in the tank in general but still no aggresion. He would take food out of my hands though so hes not a wimp.
Mine weren't aggressive till I downsized.... I think they got pissed from all the moving. And I sure hope I don't ever get bit to where it draws blood... !