In my experience, I found that in a 6' 210g tank with lots of hiding places and well-fed fish, it was usually possible to introduce a new tang into the tank safely. There is usually some aggression between the old guard & the newbie, but with luck, that aggressive behaviour only lasts a day or two. I usually feed the fish & then turn off the lights for the day when introducing the newbie.
What can I say? My wife loves tangs, especially YTs, so if its possible, when she tells me that there is a fish or several that she wants to see in the tanks, I try to do it. She asked for a school of YTs, so now she has a school of YTs. I don't recommend this to everyone and just because it works for me doesn't mean it will work for others. This is just what I do & did. Keeps Irene happy & that keeps me happy. Its hard enough to find a spouse or significant other who shares an interest in this addiction, so in my case, I gotta nurture that interest. Besides, the school of big YTs looks awesome swimming around and feeding off the nori clip or when I squirt in mysis.
Anthony
BTW, contrary to popular belief, I added the YTs one at a time, since most were bought from other reefers tanks when they shut down or changed fish. Again, not something I'm recommending, just explaining how I did it. No guarantees that my method will work for others.
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If you see it, can take care of it, better get it or put it on hold. Otherwise, it'll be gone & you'll regret it!
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