Robert Durrant's picture

Juvenile Echinoderm

Observed: 24th March 2013 By: Robert DurrantRobert Durrant’s reputation in Invertebrates
P1040811 - Copy
Description:

I noticed this creature on the glass of my marine aquarium this morning. There was another on a rock. It is 1mm across (hence image quality!). I have in this aquarium Cushion Stars (Asterina gibbosa), Brittle Stars (prob Ophiothrix fragilis), and Shore Sea Urchin (Psammechinus miliaris). This is highly likely to be a home-grown juvenile of one of these. But which?

Identifications
Species interactions

No interactions present.

Comments

gramandy's picture

think...

.....cushion star most likely but I'd like to wait til it grows a bit to add my agreement.

JoC's picture

Congratulations ..

.. on the latest addition to your marine family.
I agree with Gramandy- i'll wait a bit before agreeing on a cushion star.

Jo

dshubble's picture

cushion star

Hi all,

Pretty happy that this is what it is - development shown here http://www.biolbull.org/content/211/2/172/F2.expansion

Dave

Robert Durrant's picture

Thanks

Many thanks, Dave, for that useful reference.
I agree, that does look very likely.