Majority of the wrasse will be quarantined in several tanks and all introduced into the main display at the same time. Common tactic I use for all temperamental fish such as Angels, Tangs, and Wrasse. For single additions, I have an isolation box in the main display to help with acclimation. The Wrasse game can be tricky but with a good game plan and patience, it works. I also have a cheat sheet that helps me remember what species to avoid, Pseudocheilinus, and potential for conflict/aggression. For example, the C. scottorum is not on my list due to its aggression.