what is this?

[jjamontan]

Anyone know what this is? It looks like it is in a shell and it has what looks like a tail.

 

[Rutrag]

Looks like a feather duster worm to me.

 

[jjamontan]

Are they bad?

 

[Rutrag]

Not at all. They are filter feeders. The body of the worm is probably in the shell and the feathery gills are what strains the water for food. Tiny ones are pretty common on live rock, but this one looks to be on the large side for a hitchhiker.

 

[Jlsardina]

Not at all.

 

[jjamontan]

So it is not a type of coral?

 

[Jlsardina]

It's hard to tell from the pic honestly. Too small

 

[redsea]

So it is not a type of coral?

Are you asking if A Feather Duster is a coral? If so, then no.

 

[Jlsardina]

No. Feather dusters are considered inverts. But I can't confirm that it's a feather duster. Google feather dusters as hitchikers and see if the pics look the same

 

[Gubernaculum86]

If its the thing with the spiral attached to it ten it looks like a Christmas tree worm. Harmless filter feeding worms pretty cool if u can keep it in ur tank.

 

[jjamontan]

If its the thing with the spiral attached to it ten it looks like a Christmas tree worm. Harmless filter feeding worms pretty cool if u can keep it in ur tank.

Are they hard to keep?

 

[Gubernaculum86]

From what I've heard they can be bc they are filter feeders and only eat what's in the water. Never had a Xmas tree worm personally, but i do have a large feather duster that I target feed cyclopleeze once a week. If u really want it to survive u could feed it phytoplankton or since it's a hitchhiker let it be and see if it survives.

 

[jjamontan]

next question for all of you. I have some bright green algae growing on the rock. It is not anything but color. Any ideas?

 

[Jlsardina]

Could be coraline. Pics?

 

[jjamontan]

It is brighter in person

 

[Jlsardina]

Looks like coraline to me! Congrats

 

[jjamontan]

Awesome, does it turn purple?

 

[Jlsardina]

There's tons of colors of coraline. Pink green red purple

 

[jjamontan]

My little six line and nemo and true pec clown.