ID please

[is_that_a_fish]

I have this small white tube structures on my rock and if you watch closely a orange hand like thing pops out of it and slowly retracts back and sometimes doesnt retract back at all, any idea what it is...sorry no pic its to small for my camera to get a decent pic of it.

I also have this white dots on parts of my glass on my 10 gallon nano..any idea what these could be...thanks

[Geoff]

i am guessing the first one is just a feather duster.

the other could be snail eggs. do you have snails in your system?

G~

[Isda]

I researched these little creatures when they first appeared in my tank. From what I recall they are feather dusters and are harmless. There's even a couple on the shells of my hermit crabs.

[is_that_a_fish]

no i dont have snails in my nano, but i do have a shrimp. Also will these featherdusters grow anybigger then what they are now, because i have some nice colors. i didnt think of them as being feather dusters at first because of the shere numbers i have.. i guess thats a good thing?

[is_that_a_fish]

i figured out what the white dots on my glass were. upon closer inspection i saw that they were spiral in shape and these are what i have found them to be..they are Spirorbid worms, luckily these dont pose any threat and will likely go away. I believe i have aquired them through a recent live rock additon.

[fishtank88]

Feather dusters will sometimes make your tank a lot look better depending on what types you have and others will just make your tank look better.
i have never seen any feather dusters that look bad