Thanks for the reply. I hope so. I think I may have thrown all of my fish off by covering the tank to get them acclimated to my DT lighting schedule. Before I covered my tank, they were all out and about from about 9:30 AM until 5:30 PM. The problem with that is that I wouldn't have a chance to observe them and make sure they were getting enough to eat in my food competitive DT since I make it home anywhere between 4:00-5:30 PM, and typically leave before any of my fish are out and ready to feed.
As soon as I covered my tank, all but one of the wrasses immediately went into the substrate. Now only one is still out and about, and eating like a pig. Hopefully the tamarin will show itself soon.
I'm assuming I should hold off on prazi treatment until I'm sure of the tamarin's fate, correct???