My Tomini tang has been in QT for a week now. He has shown no obvious sign of illness, has been eating well, and has been swimming nicely.
This morning when I peeked in the tank, I saw him laying on his side in his PVC, and his tail had turned dark (like it does when he's stressed). I immediately checked the water thinking there might have been an ammonia spike, but the water is perfect.
While I was waiting for hubby to get off the computer so I could come post here, the tang came out (with a white tail) swimming around like nothing had ever happened. For now, I guess I'll assume he was laying down for a nap?...
I will keep an eye on him, but I wanted to ask if there are any conditions/illnesses that I should be watching out for, things that might be more subtle and harder to spot than ich?