<a href=showthread.php?s=&postid=14677402#post14677402 target=_blank>Originally posted</a> by chris4869
The starfish might be stressed or starved. It's normal for them to shed a leg or more to sustain the rest of the body.
My linka lost two legs after being introduced into my tank due to stress, but luckily they recover. The two lost legs grew into whole starfish. It took almost two years for that to happen.