Should I put them in together?

[DTz]

Hey guys , I’ve got 2 yellow tangs. Recently I upgraded to a 9 feet tank from 6 feet and decided to add 3 more yellow tangs. The 3 yellow tangs arrive today, I’ve added them to the main tank and put the other 2 old yellow tangs in a box as they r 30-50 pct bigger than the new ones. Should I release all together or hold the bigger ones for a week or so to let the newer and smaller yt get used to their surrounding?

 

[bambooshark]

A little longer. Let the littles stay for 2 weeks. Are there any other speices?