Friday, I put 3 McCosker's Wrasses and 1 unknown flasher/fairy wrasse in a 20G QT that I started with 5 gallons from my 120G and 15 gallons fresh saltwater. The QT has a few decent size pieces of live rock, an HOB filter with carbon and floss, and a Koralia Nono for extra flow. Water Parameters are: Temp 76, SG 1.023, PH 8.03, Amm 0. Nitrite 0, Nitrate 0. All four fish have eaten well untill today. One of the McCosker's Wrasses did not come out of the rock this morning nor to eat this afternoon. It is now laying on the bottom still alive but breathing quickly. From as much of the body as I can see there are no marks or anything that looks wrong on the outside. The other three are still swimming around normally but so was this one yesterday.
Any suggestions?
Any suggestions?