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i have some knowledge about sea urchins and how the can reproduce very fast in the wild, but is it possible to breed them in captivity.
sea urchins
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From what i know about urchins, its virtually impossible to vuisually distinguish between male and female urchins thus making it highly unlikely to breed them in captive. BTW if you plan on keeping them in your main DT say goodbye to your coraline algae...
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Actually, it's simplicity itself.
Proper manipulation of the moonlighting and temperature will make them spawn, or if you want instant results, just inject them, in the soft spot around their mouths, with a KCL solution. They'll spawn like crazy within hours, or even minutes if they're already ripe. It's a common lab procedure, since urchin larvae are very useful in bioassay testing. ( for toxicity in a system, for example )
Proper manipulation of the moonlighting and temperature will make them spawn, or if you want instant results, just inject them, in the soft spot around their mouths, with a KCL solution. They'll spawn like crazy within hours, or even minutes if they're already ripe. It's a common lab procedure, since urchin larvae are very useful in bioassay testing. ( for toxicity in a system, for example )
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i guess they would need to be gradually put in a longer night period and lower temps. i can probably handle that.
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Again, not all that hard to do. If you have an ecosystem-type setup which is plankton-friendly, then you'll have urchins galore if you're not careful.
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