Starfish arm- it's alive!

[Ben 4]

I got a Burgundy Linckia a few month's ago and when 1 of the arms was damaged, I cut away the bad arm and after dealing with the affected area, put the Star and remnants of the arm back in the tank. Lo and behold, here it is a good bit of time later and the arm is still crawling around the tank! What gives? It also seems to be growing. How much will it grow back? Any ideas?

 

[Tim Reed]

What is a good bit of time? I've seen a britle star leg move around for about 6 weeks until it stopped moving. Unless you got enough of the disc to include the medula or nerve ganglion or whatever it's called, it might not continue to develop. IMO.

 

[Ben 4]

It's been a couple of month's. I too was under the impression that you needed to get part of the disk to get regeneration, but the longer he keeps creeping around, the odder it seems.