Here is what i have learned about the six line wrasse..it is a great addition to reef, they are active swimmers, they will dissimate your pod population as they are always hunting..do not add any other wrasse to the tank..I have a 75g and added 2 lubbock wrasse, they never got the chance to even come out in the open as the 6 line would not let them. 6 lines do not bother any corals, I have had mine for about a 9 months the first one I had carpet surfed after 3 months in the tank. have a closed top.
Chromis are great , keep them in odd numbers for a better chance of them not killing each other, I also have three..started out with 6, they are mostly on the top half of the tank..I am thinking of adding 6 more