<a href=showthread.php?s=&postid=15608013#post15608013 target=_blank>Originally posted</a> by azcummins
One way to tell if the carpet is healthy is to see how sticky the tentacles are. The one I had would feel like super sticky fly paper and wouldn't let go unless I fed it food on the other side of its body.
That being said, when I put it in the tank and took it out, I was very careful to only touch its foot. Its a bit of a challenge, but it can be done.
They don't lose tentacles, but if something touches them, they will wrap around the victim in about 2 seconds and consume it. Mine was 14" across and when my pink spot goby landed on it, it shrank down to 2" in no time. Even got video of it.
My carpet never ate my purple tang, but he did eat the previous owner's scopias tang when the tang darted through the live rock and swam into it. No matter what type of fish it is, if the carpet gets its tentacles on it, it will be gone.