The serpents are scavengers, they eat anything they can find. Mind come running out of the rocks when I feed the tank.
These "common" starfish seem to feed on bio/algae films.
For me they are on the walls of the tank most of the time, and sometimes they climb to the top and stretch a leg or two out just under the surface of the water, like they are skimming proteins off the top of the water.
If they are starving, it's taking them years to do it.
I'm not saying that they are starving by any means. I would love to add one to my tank. I just feel hesitant not knowing for sure. If I got one and it did die I'd feel like it was my fault for not knowing enough about it.
I have also had brittle and serpent stars for years and although I don't feed my tanks much at all they seem to be able to find enough to eat. I have even had them without any substantial sand beds no problem. I think Ron was mainly talking about the echinaster and Linckia type stars.Also, my serpent and brittle have grown considerably in my tank and are in no danger of starving. However, I'm not sure how well they would be doing if they only scavenged. I target feed them chunks of meaty foods about once a week -- they wrap around my baster and grab food right out of it!!
I have a common starfish (from tampa bay saltwater), and I gotta say that it's made it 7 months, but is a little skinnier than it used to be. I have a flame scallop and sponges so I feed a little phyto, foods like reef chili, Rod's, and of course mysis and other meaty stuff to the fish. Anyway, my starfish sometimes seems to filter feed after I feed Rod's and reef chili -- it will raise an arm like it's trying to catch particulates. It also loves moving along my front glass AFTER I've cleaned it. So maybe some type of biofilm remains or it likes the stuff that first starts accumulating?
I think it's done better than many other starfish stories I've heard of, and keeping my tank a little dirtier probably helps. I do think it's eating something in the tank, but I honestly don't know what, and I don't think it's getting quite enough of it. I'd say it's maintaining, but not thriving -- unlike my serpents and brittles which are happy to eat chunks of anything I send their way and are as happy and active as when I first got them, and have grown in size.
Tuck a little raw shrimp under an arm and see what happens!
I have also had brittle and serpent stars for years and although I don't feed my tanks much at all they seem to be able to find enough to eat. I have even had them without any substantial sand beds no problem. I think Ron was mainly talking about the echinaster and Linckia type stars.
Also as a side note, I asked him about cucumbers and he thought the mopping cucumbers should in most tanks be able to survive, because they can feed on bacterial particulate and detritus especially if they are small.