Today sucks - my beautiful banana wrasse died this morning. I don't know what happened. It was doing great through Thursday, and I was thinking of putting him in the big tank this weekend after only two weeks in QT. Then yesterday noticed he was not very active, but he still ate well and ammonia was about 0, based on both an Ammonia Alert badge and an API test. This morning he was breathing rapidly so started to do a water change, and before I could finish he was gone. The badge still shows 0 ammonia, nitrite shows 0 (it's an old test kit without an expiration date, so don't know the validity), and nitrate was about 25. Didn't see any signs of disease, but did notice a few scales on the bottom of the tank.
This one hit me really hard - I've been super depressed today. It could be because I know someone really wants one and wondering if they could have taken better care of it than I did. It could also be because I lost two other fish this week: a royal gramma that I've had over 12 years, and a flame angel I've had less than 6 years. It could be because we're taking down the Christmas decorations and that always leaves me a little down. Or it could be because "Magnum PI" ended forever this week. There's just something about the way the bigger wrasses follow you with their eyes that makes them seem more pet-like than most fish. Whatever the reason, this guy got a burial instead of just being flushed.
I hope you are able to find one and have considerably more success than I did.