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FAQs about  Green Brittlestars, Ophiarachna incrassata Reproduction

Related Articles: Brittlestars, Sea Stars An Introduction to the Echinoderms:  The Sea Stars, Sea Urchins, Sea Cucumbers and More... By James W. Fatherree, M.Sc.

Related FAQs: Green Brittlestars 1, Green Brittlestars 2, & FAQs on:  Green Brittlestars Identification, Green Brittlestars Behavior, Green Brittlestars Compatibility, Green Brittlestars Selection, Green Brittlestars Systems, Green Brittlestars Feeding, Green Brittlestars Disease,  & Brittlestars 1, Brittlestars 2, Brittlestars 3, & Brittlestar ID, Brittlestar Behavior, Brittlestar Compatibility, Brittlestar Selection, Brittlestar Systems, Brittlestar Feeding, Brittlestar Disease, Brittlestar Reproduction, & Seastar Selection, Seastar Compatibility, Seastar Systems, Seastar Feeding, Seastar Reproduction, Seastar Disease

Nature... Brittle Star Reproduction   9/11/07  Good evening crew. <Greetings fellow nature lover.> I had an incredible experience the other day when I came home from church, my protein skimmer was overflowing all over the floor in my house. <Holy water?> We lost about 5 gallons of water, which forced me to do a water change and some tank cleaning. <Yikes! The non-voluntary kind!> When I had completed the cleaning, I noticed about 7 brittle stars (I am assuming the species) <Are micro brittle stars.> had congregated within a colony of button polyps, and others were coming out in other rocks. Within about a half hour of seeing them, they would come to the top of the polyps, would stand up on their legs and started secreting a white liquid from the underside of their body. I am guessing that I was witnessing propagation in progress. <Sure looks like it!> They were gathering in groups and doing this. <Gathering in groups gives a reproductive advantage when broadcast spawning.> I also had two of them climbing the back wall of the tank, one chasing the other and secreting the fluid next to the other one. I have attached pictures of one standing on my toadstool coral and two of the stars on the polyps in a group secreting around each other. I thought this might help others who are seeing this as well and hope that you can affirm or correct my assumptions. <I think your assumptions are spot on. Very nice photos capturing this potentially procreative moment!> Great site and thanks for your hard work, <Is Bob's blood, sweat and tears with many ancillary providers.> its well worth the read when I need the help. <Glad you find it Regards,

Green Brittle Star'¦Sick Or Reproducing? -- 04/1/08 I have had a green brittle star for 9 months in a 120 gallon tank. It has been healthy & grown well! <<Mmm'¦ Ophiarachna incrassata? Can indeed get large'¦and is known to ambush and eat fish>> Without any indication of being sick, in a matter of less than 24 hours, it rubbed itself against a rough piece of live rock & sawed itself into 4 pieces (all but one have a chunk of the body on it). <<You actually saw this? Strange'¦>> How can you tell if it did this because it is sick or reproducing? <<Don't know that you can'¦though this seems extreme for reproductive behavior>> What are the chances any of the pieces will survive? <<Not uncommon for those pieces with bits of the oral disc attached to grow in to/become whole animals again'¦in the wild. Not so much'¦in captivity>> All four are moving about the tank with ease. <<About all you can do is keep an eye on them'¦remove if they 'die' and begin to decompose>> Thanks for your advice. Kristie <<Happy to share. EricR>>

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