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scerbo 
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 Topic: Please ID! What is this?
Posted: September 27 2012 at 8:26pm |
I was looking in my aquarium today and found this sticking out of the sand. Can anyone ID it? it's about 5mm long or so. Is this a pest or something I want in my tank?
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chuckfu
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Posted: September 27 2012 at 8:28pm |
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Bristleworm
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scerbo
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Posted: September 27 2012 at 9:28pm |
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Good, bad, or indifferent? I've read quite a few conflicting opinions. has anyone ever had any bad experiences with them?
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knowen87
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Posted: September 27 2012 at 9:36pm |
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I have them, they haven't caused problems as far as i know. I would guess that nearly every tank has them.
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napalm77
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Posted: September 28 2012 at 6:17am |
Yeah bristleworms are pretty common.They filter feed mostly on detritus. They can be a problem if they get more than a few inches long they can nip at corals and sometimes fish if they get big enough. I just usually pull them out when i see them. I wouldn't be too concerned with one that small.
Edited by napalm77 - September 28 2012 at 6:18am
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jmw
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Posted: September 28 2012 at 6:36am |
 scerbo wrote:
Good, bad, or indifferent? I've read quite a few conflicting opinions. has anyone ever had any bad experiences with them?
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Only bad experience is when they sting you!!!!!! When they get bigger don't touch them with bare hands......
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1stupidpunk
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Posted: September 28 2012 at 7:47am |
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They are also known to munch on clams/scallops
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Dionysus
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Posted: September 28 2012 at 8:36am |
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A small population is great for a tank, like said above when they get big is a problem.
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Jeffatpm
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Posted: September 28 2012 at 4:24pm |
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What are good fish/critters to eat them and keep their population down?
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210 Reef with loads of LEDS
Large Fishey Room
Located Near Jordan Landing in West Jordan.
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BobC63
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Posted: September 28 2012 at 4:30pm |
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6 - Line / 8 - Line Wrasse
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- My Current Tank: 65g Starfire (sitting empty for 2+ years) -
* Marine & Reef tanks since 1977 *
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jmw
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Posted: September 28 2012 at 6:39pm |
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I used to have a Yellow Shrimp Goby who would eat them.
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Jacknugget
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Posted: September 28 2012 at 7:35pm |
My wife's coral banded shrimp eats them.
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125 Mixed Reef
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spike
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Posted: September 28 2012 at 7:48pm |
Here is when they are 100x too large!!! Found this in a tank I bought to set up in the overflow! 
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Dionysus
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Posted: September 30 2012 at 1:37pm |
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That's just a little to big haha
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napalm77
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Posted: September 30 2012 at 2:41pm |
Ive heard arrow crabs eat them.
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Jeffatpm
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Posted: September 30 2012 at 3:01pm |
napalm77 wrote:
Ive heard arrow crabs eat them. |
They do, they just seem to not last very long, and don't like living with other shrimp.
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210 Reef with loads of LEDS
Large Fishey Room
Located Near Jordan Landing in West Jordan.
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saltysleeves
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Posted: October 14 2012 at 8:40pm |
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Small ones are harmless. Big ones can be a nightmare. I've got a couple in my 30 gallon I've been trying to trap for a month. The big ones can and will eat fish that sleep in the substrate. Like my brand new adorable baby yellow watchman. Not that I'm bitter. Okay, maybe a lot bitter. Personally not a huge fan of them, but I wouldn't panic about a small one. Pull them out when you see them and check the tank at night for signs of big ones, but should be fine.
Do make sure you wear gloves when handling any bristleworms. Especially the large ones, or you will have miserably itchy sore fingers for weeks.
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saltysleeves
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Posted: October 14 2012 at 8:42pm |
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Oh, almost forgot. Prazipro will kill them if you treat the whole tank for a week with it. But you probably have a lot more of them than you think and that many decaying critters can play havoc with your water quality. But if you ever get desperate.
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suiso man
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Posted: November 16 2012 at 8:28am |
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Niger trigger fish will eat them, so will copperband butterfly fish. at least mine does. Holy crap Cole that is huge!!!!
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rufessor
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Posted: November 19 2012 at 11:34am |
Careful with allowing any in the tank. I had what I considered to be an infestation (and it can happen in a couple months) in a early tank of mine. I choose to go the bio warfare route and got a mystery wrasse. Problem solved- completely.
Predators are a very effective way of keeping a population in check but careful here- most Wrasse who will actually and reliably chomp them also enjoy other treats such as shrimp...... which can get expensive. 6/7 line are a toss up, if you read a lot about them you will find that some will eat them, some will not... but they all have the possibility of turning into a terror when they get bigger, as do most predators.
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Everything should be made as simple as possible, but not simpler -A.E.
57 Gallon RImless build in progress check the thread before if becomes boring and just full of nice pictures of colorful coral!
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