Not sure if stars count, but this one would thrive in an nps tank with a continuous feeding system.
•Scientific Name- Astrophyton Muricatum
•Common Name- Giant Basket Star
•Type of Organism- Basket Star
•Care Level- Intermediate-Advanced
•Reproduction- Spawning
•Placement/Orientation- Finds its own spot
•Feeding- Numerous feedings, especially at night when the star is open, a continuous feeding system is recommended, feeds on tiny to medium organic matter and organisms
•Sensitive to water chemistry and changes in water chemistry (pH, specific gravity, salinity, o2 levels, etc.), intolerant of copper based medications/additives