convicts are great fish until they want to mate. they are not harem maters but pair maters. having two females to one male destined the female to get beat on. once a pair has been formed, they grow intolerant of their own kind. when they are mating they are very territorial and have no problems defending their nests. mine will chase away the red devil that i have when they are defending their nest.
another thing about convicts is that they areprolific breeders. unless you have some plan to get rid of the fry, would not suggest getting them. you will be overrun with convicts.
convicts also get nuchal humps. kinda neat to see the little fish swimming around with a large nuchal hump.
semper fi