I bought two mandarins from extreme aquarium two weeks ago. I was told they are a pair but one will not leave the other alone. So, I am getting rid of the "chasee". They were both fat and gorgeous when I bought them. I will let him go for $15. Please save this little guy. I will guarantee him for a week since he's been a little stressed out in my tank. That should give him time to acclimate in your tank.