I'm looking at my Red Linika star and 2 of the tips look like they are rotting away. I saw 1 little piece of one arm on the bottom and it was moving. is something wrong or it this how they procreate?
Sorry I missed this -
Is it still alive?
Can you post your parameters?
This is almost always acclimation shock (if less than a month) or starvation.
These require large mature reef tanks and are very very delicate with parameters. What is "perfect" for fish is often fatal for these stars.