I find these larger fish (tangs and rabbitfish) to be exceptionally easy to catch in a trap. I use the Aqua Medic trap and as large aggressive feeders, they swim right in and I trap them with ease. They are also not fish that will be difficult to rehouse. Large healthy yellow tangs will always be in demand. I don't like when people buy FW fish that will grow huge and quickly outgrow their tanks because I don't think there is a large demand for those fish. Fish stores don't want them and neither do hobbyists. Thus, it's impossible to give them a reasonable life. But with yellow tangs, I think it's really easy both to catch them and relocate them, so I don't mind "renting" them for a while from the LFS. I've never had an LFS not jump at the opportunity to take back a yellow tang. That's just my opinion. I also own a 75. Other than aggression, I think you can easily get a couple years out of a tang in the 75 before relocating it.
