[smitty65]

I just put him in the tank after 1 hour of acclimation. There is one thing I forgot about. I have a cleaner wrasse that I have had for 2 years now. He immediately went after him for a cleaning. The puffer did not seem to care for this at all. That guy can get really aggressive over new fish. I have chased the cleaner away numerous times and finally built a wall against the back of the tank for the puffer to hide. I have egg crate but the cleaner is small enough to get through the holes. He was light gray colored to start but now he is dark and appears to be stressing. He isn't floating but rather laying on the substrate. I turned off the lights to hopefully get him more relaxed. I wondering is it the wrasse or is it just being in a new environment?

About the size...he is a pretty big guy. Roughly 5 to 6 inches as my friend had him quite awhile. The other fish swam over to check him out then went about their business. As far as a QT tank, I don't have one set up as I wasn't planning on any new fish. I just got the call late last night and my 10g is in the garage. With work there was no time to set it up. The fish is healthy as a horse according to it's prior owner and looking at him I would agree.