Hey guys, I have a 5 feet long 150 gallon tank, and I just added a blue throat fairy wrasse today, I’ve heard from some people that it’s very aggrieved and others have said that it is peaceful, I’ve talked with the fish store and they didn’t have any problems with the fish so far either. The temperament is also stated as peaceful in LiveAquaria.
The wrasses I currently have:
Cleaner Wrasse X 1
Leopard Wrasse X 1
Coris Wrasse X 1
The wrasses that I plan on getting:
McCosker Flasher Wrasse X 1
Naoko Fairy Wrasse X 1
Earmuff Wrasse X 1
Will the blue throat wrasse cause much aggression with any of these above mentioned wrasses? I’ve read that it may be a little aggressive with the McCosker since that is also a flasher wrasse but that it’s not really aggressive in the sense that they fight or anything but rather they flash at each other thus keeping both of their colours vibrant. Which is good in a way as you get to see them vibrant more often. Do let me know!
TIA
This may be more detailed than you expect - and thus likely a lot more confusing however I will try to keep it somewhat easy to understand;
Flashing is different to all out aggression. Now they have very similar patterns;
- Sometimes circling round each other
- New colours you’ve not seen before
- Swimming in sync or sometimes one chasing the other
Now, the main things that separate flashing from aggression are;
- One having odd markings after displays
- Locking Jaws
- Sometimes one will be hidden in a corner and not leave it much
Now, with those 3 identifiers and 3 similarities out of the way, this is where the chart above comes in as well as “general” (Only really general knowledge if you understand wrasses back to front

) knowledge.
So, you want to add a Cirrhilabrus naokoae, on the chart these two complexes are fairly closely related as they are close to each other on the chart. As you can see if you follow the lines they have a common ancestor fairly early as you go back.
Say you wanted to mix a
Cirrhilabrus aquamarinus and
Cirrhilabrus cyanogularis then you wouldn’t have a huge issue as they split off fairly far back - about 4 lines back from the cyanogularis complex. Below is the chart but drawn on to show where those splits are.
Now, one issue with the other species of Wrasse you want to mix with your cyanogularis is the fact it’s a
Paracheilinus species. These guys are notorious for being risky when it comes to aggressors and adding them after. This is a genus that I have found doesn’t fair well to aggression until their established - I’ve got 2
Paracheilinus species which consistently go for each other daily but have yet to cause any true harm. Now the reason it works is due to them being on the same aggression level. I had the same occur with two Lubbock’s Fairy Wrasses - they got along all day but every night would brawl with one becoming a victor (usually the Cebu).
Now I know, that was a lot about mixing same species and different
Paracheilinus but the aggression working. This is to show my next point of;
Cirrhilabrus cyanogularis is a different aggression level to many
Paracheilinus - I find the only species from that genus to be on the same level is the
Paracheilinus octotaenia (NOT to be confused with
Pseudocheilinus octotaenia). Mccoskeri is one which can be somewhat boisterous but it depends how established your Cyanogularis will be when you get this next batch.
Now, tank size can be with you however I have a 5’ 180G tank and yet I have had to rehome even the most peaceful of wrasses for aggression issues. I had to rehome my Cleaner Wrasse today as he went straight for my favourite Pencil Wrasse - My Kaleidos Pencil on Monday. Yet I also had a very mildly behaved Jade Wrasse - He was boisterous but he wasn’t aggressive as they are suggested to be.
Hope this helps! Feel free to ask any questions here or just PM me
