Wrasse question

[Jedi knight]

what’s the best kind of wrasse I can get with a 40 gallon cube tank with a royal gramma who’s a bit territorial

 

[Journeyman]

what’s the best kind of wrasse I can get with a 40 gallon cube tank with a royal gramma who’s a bit territorial

A possum wrasse.

 

[Jesterrace]

Cube dimensions pretty much limit it to Possum or Pink Streaked Wrasses. If it had a 3 foot length then a couple of other cool options would open up.