When I worked for an LFS
, I used to do the buying. I would actually go to the Largest SW
fishfarm in the US and walk around and pick my fish out (it was very cool), there was only one time I found any small tusks, they were about 1', just babies. They were Australlians, I got one and put it in my reef tank, after a slow acclimation and quarantine for three weeks, it entered the reef, dove into the rock work and was never seen again. Personally I would opt for 3-4" I've seen them fairly often at about 4".