I will reiterate the concern about the sixline. They have a strong intolerance for other wrasses.
Whatever you do, never go rooting around looking for a sand dwelling wrasse. That will only make them hide longer.
Another concern is the acclimation. When a fish is shipped the CO2 they respirate can't escape. This drops the ph in the bag water. This is good because below a certain ph ammonia is rendered harmless. However, once the bag is opened the CO2 can escape, raising the ph, rendering the ammonia toxic again. Ammonia has a damaging effect on fish's gills. This can add stress and harm during acclimation.
Whatever you do, never go rooting around looking for a sand dwelling wrasse. That will only make them hide longer.
Another concern is the acclimation. When a fish is shipped the CO2 they respirate can't escape. This drops the ph in the bag water. This is good because below a certain ph ammonia is rendered harmless. However, once the bag is opened the CO2 can escape, raising the ph, rendering the ammonia toxic again. Ammonia has a damaging effect on fish's gills. This can add stress and harm during acclimation.