For over two years, my Powder Blue and Yellow Tangs have been fairly respectful towards eachother. All of a sudden, the Powder Blue is on a rampage and not letting the Yellow Tang out and is even sometimes bothering some of the other fish. Ironically and until recently, the Yellow Tang was actually the aggressor and would be the one to go after the powder blue, but it was always mild.
Has anyone had a fish go crazy like this in an established environment? (I have not) What was the outcome? Did it subside over time? I've been thinking of adding a fish to this tank anyway and might do so soon to help disperse the aggression.
Has anyone had a fish go crazy like this in an established environment? (I have not) What was the outcome? Did it subside over time? I've been thinking of adding a fish to this tank anyway and might do so soon to help disperse the aggression.