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Link below it is showing up on my rocks on the top like as it was dropped in or sumthing and everyday i find more and more i really want to know what it is, Thanks

Link go to bottom last pics

http://www.cardomain.com/ride/2474061/2

http://www.cardomain.com/ride/2571255/2

thanks alot guys

http://www.cardomain.com/ride/2571255/2

I am not sure what it is, as I havent
kept saltwater tanks before at all.
Do you have liverock?
If so, I would assume its something coming
out of the live rock.
It looks almost like the kind of cases
freshwater cadis fly larvae live in.
Perhaps some type of larval case of something?


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Are these entities sessile (i.e., they stay in one place) or motile (i.e., they move about visibly)?

If they're sessile they could be the cases of small tube worms. In which case, while they are probably harmless, and may even turn out to be quite decorative in their own right, you'll have a fun time identifying them because this is, strictly speaking, a task that requires a professional invertebrate zoologist and some specimens to dissect. Even determining them to Family level could prove to be an interesting exercise, let alone to Genus or species level.

If they're motile ... in that case you have me seriously puzzled.


Panda Catfish fan and keeper/breeder since Christmas 2002

they dont move and there loose like it was dropped into the tank from the top!

http://www.cardomain.com/ride/2571255/2

They are not actually attached to your rock?

Hmm, the mystery deepens. Most tube worms will attach themselves to a substrate given the chance. However, the ones I'm familiar with tend to fall into the class of "large and adult", as in fanworms that produce big 6 inch plus spreads of tentacles when they open. Whether they behave the same right from the moment they start building tubes as little juvenile worms is open to question. Again, we're into the territory of seeking an invertebrate zoologist, and possibly donating some specimens for dissection, as this tends to be the ONLY way many invertebrates CAN be identified conclusively. You will CERTAINLY have to sacrifice some specimens if you want them identifying to species level.


Panda Catfish fan and keeper/breeder since Christmas 2002

hi thanks i have looked everywhere! No there not attached, there loose just like if it was dropped in from the top you know, I know what a tube worm is and no thats not what it is but i do have a ton of those so maybe thats how they start?

i have blue leg crabs and stuff in the rocks maybe its there bathroom left overs???

Thanks for trying!

http://www.cardomain.com/ride/2571255/2

If nothing is moving or alive looking I wonder if maybe you just loosened and stirred up a bunch of feather duster tubes which settled on the rocks. How easy are they to squish? Is it just tubes made out of thin white shells or softer material? Can't really tell much detail from the picture.