This behavior is what gives them their name of flasher wrasses. As long as there is no damage or one keeping the other in hiding the behavior is perfectly fine.Question
Is having two male flasher wrasses in a 40 gal breeder (with plenty of rock and algae) detrimental to them? So far there are a lot of display but no biting. The smaller Carpenter sub male was there first for several weeks. I put the Yellow in in it Friday. The yellow fin was submissive at first but over the weekend, on Sunday, I clean and removed a lot of the algae from the tank. After the clean up the Yellow Fin started to flashes instead of being submissive. A this time the two fish occupied different area of the tank and will flash when they come close together. They also hold their fin almost fully erected almost all the time. When I feed, they both chasing food and often the faster one will get a particular piece of food, but no fighting that I can see.
Is this stressful for them? Having a rival male around the whole time?
OrionN's advice is sound.Just bought a McCosker's Flasher Wrasse Saturday and he was out in the tank for about 5 minutes after introduction to the tank, ever since he has been hiding in the same place in the live rock. How long before he stops hiding?
Are there any other wrasses in the tank? Any assertive tankmates?