Hot883 is 100% correct. I have a 75 Gl with plenty pf live rock hiding spots. I lost a few clowns and added a total of 4 thinking they would pair up. Definetly peeking order in there. The larger one is good, who is the original. The second largest follows her around. Next one, gets pushed around by the third. But the smallest one gets chased/harrassed the second and third any time it comes out. The smallest has to hide all day, is very pale and reallly only comes out to eat at the one end of the tank. If the others see it eating they chase it back into the rock. Poor guy.