Starfish

ozadars

New member
Hi there,
I bought a starfish a week ago. I believe its Pentaceraster sp. This is a carnivore starfish like chocolate chip and it has knobs on too. Anyways, I feed it with dead fish when it was on the glass. After sometime it covered the fish with something. It looks like this white curly strings that mushrooms take out when they are stressed. Few hours later he took this thing back and stopped eating. I think it uses these curly strings to digest its food outside of its body but this is just a guess. Anybody has any ideas?
I was wondering if this behaviour is specific to this species or do chocolate chip starfish or other carnivore starfish do the same thing. I had another carnivore starfish before, a mediterranean species, but i dont remember it doing something like that.

Btw, yesterday and today i saw it doing the same thing while it was on the glass but there was nothing to eat on the glass. He was just standing still on the glass with its curly strings covered the glass.
 
Yes, these stars and many others evert one of their two stomachs to digest foods externally. That is normal.
 
Thanks ophiuroid.
What makes me think is, I saw him everting his stomach while he was standing on the glass with nothing to eat except algae but I dont think these stars eat algae. Or do they?

He also likes to do this while he is on the silicones of the tank, can he be eating the silicones? Would this cause any danger to the tank?

Thanks again.
 
THey are actually omnivorous, so they will eat algae as well as anything meaty. I would recommend when spot feeding that you try some nori or even spirulina wafers now and then.

In addition, there is a whole world of microscopic critters living on the biofilms and algae that they would be eating as well.

I wouldn't consider it to be a risk to the tank.
 
Thanks for the answers again ophiuroid, they really cleared out all the question marks in my mind.

I want to post a picture of the starfish that I talk about if anyone is interested.

resim003km7.jpg
 
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