These guys have been doing this for hours. One will release a bunch, then the other will. Each time, maybe 20-30 eggs each. I would say between them, they probably dumped a few hundred eggs in the tank. Can’t tell if or how the fertilization happens, but they for sure are doing it as a pair. Took me a while to catch them at the right moment.
youtube.com
![youtube.com](/proxy.php?image=https%3A%2F%2Fi.ytimg.com%2Fvi%2FZBuJdhplF5Y%2Fhq2.jpg%3Fsqp%3D-oaymwEoCOADEOgC8quKqQMcGADwAQH4Ac4FgAKACooCDAgAEAEYfyATKDEwDw%3D%3D%26rs%3DAOn4CLDB9gL-3wEELl89Csh8e4oUoju-iw&hash=a9fc94a2dda9388f19df7f56ad36cb5f&return_error=1)
PinCushin Urchin releasing Eggs
![youtube.com](/proxy.php?image=https%3A%2F%2Fwww.youtube.com%2Fs%2Fdesktop%2Fc1d331ff%2Fimg%2Ffavicon_32x32.png&hash=b09c005df9cdf4ce2e002c700b835263&return_error=1)