Pix & ID: Critters that come in your rocks: the good and the bad.

[avijay23]

Having attachment trouble.

 

[tidus10]

Oops here the pic.

Spirobid worms it looks like. You can pick them off if you want

 

[Tamarae]

Palys or Majanos?


DSCN0988 by nometank, on Flickr

Also thought I'd been invaded by aliens last night when I woke up about 3am and decided to peek at the tank while getting a drink of water. Saw what I've now identified as at least 1 peanut worm if not 2 living under this same rock.

 

[ReeferKimberly]

Palys or Majanos?


DSCN0988 by nometank, on Flickr

Also thought I'd been invaded by aliens last night when I woke up about 3am and decided to peek at the tank while getting a drink of water. Saw what I've now identified as at least 1 peanut worm if not 2 living under this same rock.

protopalythoa, or button polyps

 

[Tamarae]

Thanks Kimberly!

 

[avijay23]

bump

 

[Sugar Magnolia]

Stickied threads don't bump.

Toadstool leather and a sponge.

 

[BretCreager]

id please

id please

Found this in sponges as I was cleaning today, any ideas, its about 3to5 mm long

 

[Yeroc9]

Just set up my tank last weekend and so far the hitchhikers I have found:
Aiptasia

Polyps
A worm
Small brittle stars (4)
Found a crab while breaking off the pieces of rock with aiptasia... Must have injured him though found him dead a day later
Oh yeah... And 100 tiny yellow cucumbers!

 

[Yeroc9]

Couldn't figure out how to put more that 1 pic so here are the rest

 

[Yeroc9]

 

[Yeroc9]

 

[Yeroc9]

 

[Yeroc9]

A better pic of the polyps?

 

[Yeroc9]

Oh yeah, and speaking of hitchhikers... One of my hermit crabs came with barnacles on its shell! I got a pic of it feeding. You can see on the top 1 a blur of tiny white feeders

 

[justinr2k]

Oh yeah, and speaking of hitchhikers... One of my hermit crabs came with barnacles on its shell! I got a pic of it feeding. You can see on the top 1 a blur of tiny white feeders
View attachment 269743

Very cool!

 

[justinr2k]

A better pic of the polyps?
View attachment 269687

I have a bunch of these. They are multiplying like crazy!

 

[AZgauge]

Any ideas on what this is? I thought I saw a pic of something like this in this thread but couldn't find it again.

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[h2pvnus]

Anyone know what is this. Its round and got tiny leg. I dont think its baby bristle star.

 

[alexander_ktn]

I just placed my first ever piece of live rock in the tank I'm cycling and couldn't believe how much more alive it is than I thought it would be.

There are two different cucumber looking things in between the rocks that I'm not sure what they are and what to do with them.

Also there is a picture of something else I'm not sure what it is.

Looks to be cucumbers as you said - and the other thing appears to be a corallimorpharian. I'd leave all in (if the cucumbers are still alive) - I found the ones you get with the live rock usually don't become problematic and are a nice free addition to the cleaning crew.

Oops here the pic.

I'd guess it's some sort of hydroid - but very cool looking. I would leave it in.

This one is small, about a 1/8 inch. Aiptasia??

Definitely not aiptasia - I'd guess some dead calcareous algae.

This hard shelled creature was in my live rock. Every now and then he peeps out, looks like tiny snail heads. He sends out spider web like threads and that really closes up the xenia.

A vermetid snail.

Found this in sponges as I was cleaning today, any ideas, its about 3to5 mm long

Looks like Sycon sp. sponges to me.

Any ideas on what this is? I thought I saw a pic of something like this in this thread but couldn't find it again.

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A sponge.

Anyone know what is this. Its round and got tiny leg. I dont think its baby bristle star.

Some sort of jellyfish/hydroid - very common and harmless.