In my less than established 300 gallon system, I had a problem when I added too many pod grazers. I would probably have had different results if my tank was more mature, but after adding a pair of canary wrasses to the tank, the mandarin disappeared. I'm thinking more on the side of available food source, though. I dont suspect you would have aggression issues.
agreed.Thanks. Obviously my leopards eat pods as does my scooter. Still, there should be plenty (40 gallon established refugium) in that sized tank.