Bristleworm Question

rbcjoker

Member
So I had an unusual occurance happen in my tank the other day, and I wanted to ask you experts around here if it's anything I should be worried about.
The backstory: I have a 55 gallon tank, up for about a year, with about 60 pounds of live rock. I can see a number of small bristleworms crawling around after dark, but one night we discovered that there was one that was rather large (we guess at least a foot, probably larger, but it's of course hard to tell with them.) I don't have any corals in there, and he leaves the fish alone, so my take on it has always been live and let live.
Well, about a week ago, I was doing some routine cleaning in the tank, and he made an appearance. That's wierd enough, as he's awfully shy, but then he sort of dove back into the rock, until his butt came up out of the rock. He then shot out a milky fluid that clouded up the tank for several minutes.
So, umm, what the heck was that??? Is it harmful? Should I try catching this guy or what? Any advice would be great, folks!
 

geridoc

Well-Known Member
One possibility is that your "he" isn't he, but she was laying eggs in the water column.
 

pastor b.

Member
Dear hobbyist , Bristle worms are beneficial scavengers that live within live rock . They will not harm healthy fish at all. But if there's a dead fish or any uneaten food left on the bottom of your aquarium floor,the bristle worms will emerge from their hiding spots to eat what's on top of the gravel or sand,then they'll retreat back to their hiding spots . If you think this is something to see , wait 2 hours after your lights are off at night. Then look into your aquarium with a flash light ,and you'll see plenty of bristle worms forging for food . Bristle worms multiply quickly when you over feed your fish ,so feed your fish what they can consume within 5 minutes . Enjoy the hobby
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