stars on top of each other! What are they doing?

Violet

New member
Just snapped this pic of my stars on top of each other, can anyone tell me what they are doing?
142611mini-mini-stars_004.jpg
 
Pseudocopulation. They're trying to mate. The gametes of these guys are still fertilized in the water, but they come together like this to increase the chances of successful fertilization.
 
Well, they're probably going to be as successful as possible on their own as far as fertilization goes. Actually raising the larvae which have an extended planktonic stage would be a challenge. You would have to set up a seperate system to do it.
 
You would have to keep them suspended, provide them lots of phytoplankton of a few different species, and then a settling cue once they're competent to settle. As far as the settling cue, it's usually a chemical associated with the adult food, but I don't know that anyone has looked into the cue for this species.

Raising the larvae wouldn't be impossible, but this is would be one of the harder inverts, especially if you don't have much breeding experience. If you're interested in breeding inverts I would start off something like shrimp for which the process is fairly established and then branch out into the more untested species.
 
thanks greenbean, for now i think i will let nature take its course and maybe try an easier species in the future, i am however breeding sacoglossa slugs right now, it wan't intentional it just happened,(hitch hikers) they have an enormous appetite for caulerpa, i hated them at first for what they did to my caulerpa, but after studying them they are cool to control caulerpa. think i will stick to them for now. thanks for your info!
 
Some sort of Astropecten, right? The other possibility is that one is doing it's best to digest the other. They've been known to be cannibals (although Mike is probably right).
 
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