I have three 3/4" percula clowns in a 10 gallon quarantien tank. They have been in there for 3 weeks. Perfect health the whole time.
Lately, two of them have really started picking on the third. They are pecking at him every chance they get.
Additionally, the one they are picking on is beginning to lose distinction in his black stripe that separates the white from the orange. You can not see that much black at all anymore.
He eats just fine each day, but I'm worried. Is this normal behaviour?
Amonia = 0
Nitrites = 0
Nitrates = 5
pH = 8.2
Temp = 79