New addition aggression

[jonp]

My first fish was a Purple Pseudochromis which I let roam my 90g for about 3 weeks. I have recently added a Yellow Wrasse (been in there for about 5 days now) and the Purple Pseu. constantly harasses him. How long does it usually take for the Purple Pseu. to get use to the new tank mate?

 

[jbird0420]

Normally when that happens, I'll change some of the rock around to change up the territory. If that does not work, take out the aggressor and put him in a separate tank for a few days. Rearrange the rock in your display tank and after a few days have past, put the aggressor back into the community. Usually works for me!