Hi guys,
This morning my wife and I noticed one of our Yellow tail acei looked really beat up, his fins are brownish now when they should be clear with some blue accents, he has started to do flips and rolls in the quarantine we setup for him. Came home just now and he is still alive, breathing, fins moving around, he seems a little weak and all that and is mostly upside down but can right himself and swim around a little. What can I do?