Yep, they went straight in. I purposely purchased so many fish at once to save on shipping AND to allow a few weeks to see if they get sick. I know if they do i wont be treating in the DT of course, but it I am pretty certain that they will be fine as far as illness, they came from liveaquaria and their divers den which typically holds fish for a quarantine period anyway.
The other fish I am adding have been in my home system for minimum 6 months, most over a year so any illness would have presented itself by now.
I have a unique situation with my tanks so it should work out.
The only thought I am having is whether to qt the additional tang I get and add him in with the others in a few weeks or what. I can qt him when I get him and then wait it out and see if he is sick, if not I can move him and the other three all at once. BUT I am not sure how long I can have the 125g up and running with the 180g going. Tangs and stress do not work out well so I need to add the 3 I have and the new guy all at once to try to cut down on stress and aggression.
I have not qt'd any fish since my tangs and the anthias. I know tangs can be ich magnets and the anthias' sometimes have parasites so I kept them purposely qt'd for several weeks. Before that I did not and lost several fish all due to a sick tang coming into the system. But all the small fish I have gotten since the tangs have gone into the tanks directly. I have been lucky. Very lucky in fact that I have only had one tank wipeout since I didnt qt. My best advice is to qt if you can. Especially if you have a new tank and buy your fish locally. I have never had a sick fish from an online retailer, every sick fish I have had that died came from any number of lfs
's. Harsh, but true. Not sure if everyone has had the same luck but thats been true for me for a couple years now.