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

[Snarl]

What are they?

What are they?

I have a few of these on my glass and overflow box. Should I be troubled?

 

[quagmire]

spirorbid worm, harmless

 

[Snarl]

Hey guys,with my lights out I used my flash light to give a quick look over my tank. I noticed a very fast moving dark bug like thing run across my sand and into my liverock. I only saw it for a split second but it reminded me of a role-poly. Do I need to be concerned if it's a black one. Almost all pics I've seen here are of white translucent varieties. Keep in mind I cannot say for certain it was a roly-poly. Ot was also rather large say 3-4 mm if not 5mm. I know without a pic I'm fishing for a needle in a hay stack but im hopin someone has a pic of something based on my description

 

[quagmire]

Could be an Amphipod. Colors can vary a bit.
Mostly just shades of tan to dark brown.


https://www.google.com/search?q=amp..._FiVMnOBKvdsASsgoHoDw&ved=0CAYQ_AUoAQ&dpr=1.5

 

[Sugar Magnolia]

Hey guys,with my lights out I used my flash light to give a quick look over my tank. I noticed a very fast moving dark bug like thing run across my sand and into my liverock. I only saw it for a split second but it reminded me of a role-poly. Do I need to be concerned if it's a black one. Almost all pics I've seen here are of white translucent varieties. Keep in mind I cannot say for certain it was a roly-poly. Ot was also rather large say 3-4 mm if not 5mm. I know without a pic I'm fishing for a needle in a hay stack but im hopin someone has a pic of something based on my description

Might have been a sphaeromatid isopod.

 

[killinit123]

Hey guys,with my lights out I used my flash light to give a quick look over my tank. I noticed a very fast moving dark bug like thing run across my sand and into my liverock. I only saw it for a split second but it reminded me of a role-poly. Do I need to be concerned if it's a black one. Almost all pics I've seen here are of white translucent varieties. Keep in mind I cannot say for certain it was a roly-poly. Ot was also rather large say 3-4 mm if not 5mm. I know without a pic I'm fishing for a needle in a hay stack but im hopin someone has a pic of something based on my description

could also have been a small mantis shrimp?

 

[adnedarn]

Are you referring to the object circled in red? See attached image below.
If so, i can't make out what it is.
Other than that, all i see is a cluster of xenia.

Yes, that.


Edit, pulled out the Cannon to try and get a better photo. Hopefully someone will recognize it.
Thanks!

 

[QuiGonJay]

Greetings Gurus of Weird and Awesome Creatures,

I'm pretty sure this is a young stomatella snail, though my son thinks (hopes, more likely) that it is a nudibranch.

Can anyone confirm/deny?

Thanks!

 

[cloak]

+1 nudibranch.

 

[QuiGonJay]

He will be excited. Me, not so much as I hear many are very unfriendly to coral. Any ideas as to type?

 

[cloak]

I have no clue, but a large majority of the nudibranchs we find are not reef safe.

Maybe these links will help.

http://reefkeeping.com/issues/2005-05/rs/index.php

http://www.advancedaquarist.com/2004/10/inverts

http://www.advancedaquarist.com/2004/12/inverts

 

[QuiGonJay]

Thanks. Yes, after some searching and quick reads looks like it's going to be nigh impossible to ID a non descript white slug/nudibranch looking creature. Will have to keep an eye on it.

 

[reepher315]

Any Ideas

Any Ideas

Id appriciate any help getting an ID on this guy. Sorry for the bad pic...

 

[reepher315]

heres a slightly better pic

 

[reepher315]

Im refering to the pink looking thing. I thought it maybe a milli but I figure that would be to lucky

 

[cloak]

It's a Foraminiferan. (harmless)

 

[reepher315]

Thank you glad its not anything to worry about.

 

[QuiGonJay]

Ok, here's a weird one. If it wasn't underwater I'd say it was some sort of centipede as it has multiple legs.

 

[mike1024]

Hi folks. This came with (or rather in) a coral fragment. Is that a bristle worm? Should it stay or go?

 

[kainic]

Hi, can you please help me identifying this?

Hope the picture is good enough.

Thanks in advance.