Most starfish graze on film algae, and tend to go to where there are high quantities of algae.
Chances are your tank has lights, and the algae will grow stronger closer to the light.
The other reason is the starfish could be getting bullied by other tank mates, so it's just getting a break from the others.
Look at your tank at night with a torch, the starfish should be down the bottom grazing while the other fish sleep.
No, Starfish aren't supposed to be in a reef aquarium AT ALL especially in a nano aquarium such as in your case.
I have read forums on the same matter as I had the same question. It seems that they have something like an eye on each end of they're legs. Apparently this is not uncommon and is a way for them to "see" whats going on in the tank. So no, nothing to worry about.
Never it is way too small for a starfish a 50 gal tank is good tho
Cause there is algae that grows on the side of the tank, and that's what the starfish eat.
White spots on a starfish usually indicate illness. If the salinity in your tank has changed, it can cause the starfish to become ill and may even be fatal.
Watch what happens outside the tank, read the manual, and comfort Nemo after the failed escape.
Yes, as long as you take proper care of them :)
tube foot
Usually they come as 'hitchhikers' on liverock.
The Lands' End Baby Girls' Skirted Tank Swimsuit comes in Classic Navy Starfish, which is a solid dark blue body that is trimmed with red and white starfish along the neckline.
Tropical usually refers to Freshwater tropicals; and so the answer is no, because all starfish are saltwater.
Obviously you can't, it will go rotten and kill everything else in your tank because of the toxins its releases out of its skin. DON'T DO IT!!