Great info and i am thinking of putting a list together.
I have a list already (along with an extensive write-up extend on this subject), although it's hosted on another forum. As it originated on that forum, the forum owner has asked me to keep it there. I'll gladly link everyone to it with your permission.
Well said Brett! I'd also add the Four Line to the don't mix list as well.
Let's just take this a step further, as you can generalize the mixing of wrasse by what genera mix and which do not. I aruge ANY species of the Pseudocheilinus genus (with the exception of the Pink-Streak) does not belong with other wrasses at all, regardless of genus.
Almost all Cirrhilabrus and Paracheilinus wrasses can be mixed together. But it's here that there are some species-by-species exceptions.
Macropharyngodon wrasses can also be mixed with the above two genera, but mixing multiple Macropharyngodon species in the same tank may need to be done with caution.
A small sub-set of Halichoeres wrasses are also suitable for mixing with the above three genera.
my limited experience would be to add Temminckii and Lubbocks to the don't mix well list. Maybe even the condei?
Temminickii are hit/miss with regards to aggression; it's really close to a 50/50 split there. Mixing there, depends on the level of experience of the aquarist.
Lubbocki generally aren't overly aggressive. Occasionally they are, however. Usually, they'll stand their ground quite well, but generally are all bark and little bite.
Condei was in that list, and that's generally true.
Herein lies the difficulty in writing about this subject; it's all rather subjective. Mixing wrasses isn't an exact science, as you never quite know what you'll get. It's a matter of the personality of each and every wrasse. Generalizations can be made, and we can make such by building off the experience base of various keepers, but there's never a perfect answer.
-Hunter Hammond
