Uhh yea, simple fix...give it time!
their also still pretty small
their jewels so before you know it you'll have some maniac pair kicking tankmates butt (thats short for killing off anything else in the tank and males will even kill a female that isnt ready to spawn) while makin' babies..lots and lots of babies.
some of the meanest, lethal fish when spawning i've ever kept!
alrights coool but yea i used to more agressive fish like flowerhorns and red devils cuz i have a tank full of them trying to get rid of some red devils go like 30 of them they over crowding