I had pearly occelatus approx 8 that died due to ICK. So I ordered 4 Lamprologus Signatus in their place. So while I am waiting for them to get here, I discover 2 pearly occellatus had made it and were in hiding. I have them in a 40 gallon tank. So the pearly occelatus set up their territory with one on one side of the tank and one on another..so each were claiming about a space of 20 gallons each. Then along came the Signatus a week later, and those two tiny pearlies are not letting the 4 Signatus take up any space in the tank except behind rock in the back. Is there any way to help these Signatus claim an area?