Which basslet to choose?

[Zionas]

Hi, I want to choose a Basslet or maybe even two for a 30g soft coral reef setup. The 3 basslets I have in mind are: the Royal Gramma, Swissguard / Swales / other Liopoproma species, or a Yellow Assessor. I might opt to keep two different species. They’ll be sharing the tank with a pair of Ocellaris clowns and a Yellow Watchman Goby. 

 

   Which of the three basslets is the hardiest, longest lived, and least likely to bother any other fish in the tank?

[Gourami Swami]

Royal gramma are pretty chilled out usually. Keeping two species in a 30 is probably pushing it. You want to stock species of fish that are distinct enough from one another that they don't see each other as competition. I would pick your favorite of the basslets and then stick to fish that don't fill the exact same niche/look similar enough to be a problem, personally.