Suddenly agressive Kole Tang

[bkelley02]

I just recently added a Six Line wrasse to my current tank which only housed 2 fish. A Kole tang and a White Cheek tang. Since I've added the wrasse, the Kole tang seems like he's lost his mind and keeps going after the Wrasse. It's only been about 30 minutes but it concerns me as he's never shown any signs of this towards the other tang. I haven't added any fish to the tank in about 6 months. Do you think this is just showing dominance for now and will subside?

 

[bkelley02]

Any one? Am I just being overly concerned and this should pass? I've shut off all tank lights and all the fish seem to have settled down for the night. I also added a Lyretail Anthias and the Kole went after him as well.

 

[BTTRFLYGRL]

Is normal, he's showing the newcomers who's boss. The Sixline can take it but I would watch the Anthias. This is the main reason you add most aggressive fish last and though Koles are not as aggressive as other Tangs...they are Tangs

 

[bkelley02]

Thanks. I just hope he calms down soon. The Anthias are hiding in the rocks and coming out every once in a while. I haven't seen the six line in a while. If this keeps up, I may have to try and move the Kole. I have no idea how I'd catch him though. :worried: