Eunice worm, Bobbit worm

[AkoAung]

So I got one of these in my tank. A few months ago a few minutes after turning out the light I saw one of these rear its head out of the rockwork that was literally near the top of the rock structure I had in my tank. After sleeping on it, I decided it was in that very rock I saw it on, and decided to toss that rock outside into the yard, as it was winter. Satisfied it was gone, I left things as is.

Now I have just 3 zoa colonies on plugs in the sand. I saw 2 smaller ones tossed about, and didn't think much of it. I have sand-digging fish and thought they tossed it about.

Then I woke one day and found my biggest colony was gone. just completely disappeared. The plug likely dragged into the sand with it.

So the bugger is still there.

Now this is in a small tank. Live rocks in there I've had for over 5 years. I do not wish to build a trap. Worst case I can toss the rocks as I have plenty of dry rock in storage.

What I want to know is, if I place all the rocks in fresh water, will this worm crawl out of the rocks? Or will it stay inside and die?

Second question is, how do these worms propagate? Can a solitary individual lay eggs or does it need male and female? Should I be worried about babies? In that case, what would be the best remedy?

Thanks for your responses!

 

[ycnibrc]

Most worm will crawl out if you soak your rock in rodi water. Bobbitt worm will do damage for your corals because they can get really big so it's best to take them out. U can try at night to see which rock they come from and remove that rock out.

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[AkoAung]

Ok that's what I wanted to be sure of, that they'll crawl out. I'm going to take out all the rock and soak it in water LOL. It's big. size of my finger when I saw it. It has to be huge now or long. It ate a whole colony of zoas, at least 15 polyps.

 

[Kyle2019]

Dude, I have seen the monster in my aquarium once. Frankly speaking, I didn't understand, that it was vermin at the begining, because of it's beauty and size(it was very small, like a penny). I regreted not only once, that I didn't take it from the fish tank in that day, I saw it first time. This creature was the bobbit worm, and it killed all my 7 fish during weekend, when I was at the parents. So, conclusion of all is that, monsters shouldn't look terrible for doing harm. Take care about your pets, guys.

 

[vette68]

I had a mantis shrimp in my reef several years ago. Same thing. Hid in a rock. I couldn't catch the sucker, but I could hear it. I ended up taking the rock out of my tank one piece at a time and dipped it in hyper-saline water in a bucket. Salinity was something like 1.040. As soon as the rock hiding the shrimp hit the water, he shot out, into the bucket. Of course, I can't guarantee that your worm will do the same, but hypersalinity works on other pests, so it might work on a worm.