Adam wrote:
do all species of starfish regenerate limbs? If so, why not keep
starfish in another tank and "prune" them as needed. Of course there
about a million flaws in this plan...

Technically, they eat the tube feet. They'll eat your sea urchins, if
they don't have starfish. They seem to really like chocolate chips
stars.

They are interesting, though. They sit out in plain sight, and aren't
at all bashful. You need a good protein skimmer, though :-)

Mike