VOD:
Lucky you, this one is quite tolerant, unlike the one below it:
You can see
radial feeding posture, used in low currents (or vertical posture in high flow), you can use this as indicator of flow, but ultimate choice will make your feather star.
I have the same for almost an year.:
It could be
Lamprometra palmata or
Dichrometra . Name can be useful during detailed search, particularly article on their feeding.
This one even better, open day and night, tolerates bright light:
What the green one will need (I may be mistaken, but it seems to me to be important for them):
- hiding place for a day, dark cave. It should be right under their chosen place of feeding. They come out in the evening, and crawl down in the morning. It could be coral, even sps - no conflict with feather stars, polyps not even closed. In my case it was big Christmas tree rock (green, Madracis decactis), with half-shell under it, placed on two rocks, this created small dark cave. Later used a couple of small pieces of LR for making a dark cave, but watch for a place, that star likes.
- watch for losing arms or tips or arms, something with water quality (if you are feeding well). Alkalinity better to be in low-middle range, but not below 7 dKH or higher 11 dKH, water shouldn't become yellowish, have turf algae smell (bog), do not have red slime or dinoflagellates. This will not kill at once, you should have time to solve the poblem. Cleaning, water change and frequently changed carbon at this time, at least.
- protect them from being shredded by powerheads or being sucked into intakes/outflows.
- Continuous feeding, or more than two feedings each night. For example, 7:30 PM, 9, 10:30, and in the morning, 1-2 times. Keep them open for a feeding as long as possible.
- Feed variety of foods, everything you can find, and give star a choice. From 40-50 micron Oyster eggs, Golden pearls, Argent Labs Hatch Fry or Hikari First Bites to Cyclop eeze (this is too big, 800 microns, but youngest crustaceans could be used). Article on feeding mentioned 240 micron as a maximum size for these species.
Variety of phytoplankton, live or dried (PhytoFeast, DT's or ESV or PhytoPlan), small zooplankton (ZoPlan is readily available, RotiFeast is larger, Reef Roids, Rod's Food, whatever is available and affordable), don't forget about existence of specialized food, Fauna Marin and Timo. I'm not using them yet, but would like to.
But: I'm culturing live SS-rotifers (super small), that takes time and they have to be enriched.
Kolognecoral had this mottled green feather star too, more on her
feeding.
More keepers of other feather stars:
Sailfin's experience with feather stars.
More.
steveweast fed cyclopese, rotifers and Oyster eggs.
Stottlemire - "baby brine, Roti-Feast, and Shellfish Diet."
Charles Messing's Crinoids information, especially Diet page.
Bob Fenner's article.
HTH
Post anything useful, that you will find or notice, for us.