Scott Michael seems to think both are hardy, although clearly others here disagree, I would wager he has more experience than most folks here. All I can use is my own experience. My pink streaked wasn’t hard to qt (I basically used hot rocks’ method) seems perfectly chubby and happy with 2-3 feedings a day of a mix of high quality pellets, flakes, fish eggs and frozen foods, and is delightful. The possum wrasse I had came with both flukes and internal parasites and eventually died, but that doesn’t mean possum wrasses aren’t hardy, since it’s just one case. neither should be with aggressive tank mates, your shrimp goby is a good tank mate. If your LFS has either one and it is eating with gusto and you see no signs of disease than get it and qt as best you can. Or order from a vendor that qts fish like those on humblefishs’ forum. (Fishotel, marine collectors, quarantined marine, etc)