I recently moved our Kole Tang
from QT into the Display Tank. He was in QT for 4 weeks and doing great. Tonight I noticed his mouth looked very swollen. He appeared to be acclimating beautifully in the tank and eating, but for the past two days has seemed melancholy. He was introduced about a week ago.
Other inhabitants include a Hippo Tang, 2 Banggaii, 2 Firefish, 1 damsel, skunk shrimp, and blood shrimp
. Everyone else appears to be fine.
Looking for advice!