I caught a spaghetti worm spawning in my tank this evening. I’ve only got maybe 4-5 in my tank, but I walked by around a half hour before lights out and noticed that this spaghetti worm was out of the sand and sort up on this piece of rubble with some zoas on it. I thought it was weird, but wasn’t too concerned. I came back around 15 minutes later and watched it for a minute, and saw it spray a bunch of sperm or eggs into the water, I tried to film it but wasn’t fast enough. So I watched it for a couple more minutes and then it did it again, this time I got it. I’ve never seen any worms in my tanks spawn like this, and thought it was interesting enough to post, so here it is (videos not the best, but you can definitely see what’s happening):