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

[acabgd]

Looks like a harmless bristle worm

[killinit123]

Originally Posted by 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.

looks like some sort of larva to me not sure of what though sorry

[mike1024]

Originally Posted by acabgd

Looks like a harmless bristle worm

Thanks. I'm really new at this, so anything in my tank that I didn't put there worries me. So you'd leave this in the tank and just let it be?

[kainic]

Hi,
Can you please help me identifying this?

Hope the picture is good enough to distinguish.
Thanks in advance.

[Sugar Magnolia]

It's a digitate hydroid. That pack a nasty sting.

[kainic]

And again!

That's pretty weird. About 1cm. Both pigtures are the same thing.





Thank you!

[Sugar Magnolia]

Looks like sponge growth. Harmless.

[Rhygar666]

Good morning from Germany,

i found this fireworm http://imgur.com/a/Dogp9 when i was feeding my crab and it tried to steal its food, made several pictures of it (altough i need to try making better ones the next days this was only my mobile phone camera).
just want to know which kind of fireworm it is.

[Sugar Magnolia]

It's a bristleworm. Harmless.

[Rhygar666]

okay i got a few other pics i would be interessted in knowing what that is

[2peppers]

This guy has been in my tank since I got it. I think its a bristle worm. Never seen him do any harm. Just noticed a second one the same size today and after looking around saw 4 tiny babies. Should I try to get rid of em or just leave em be? Thanks!




The babies

[CC WaterGuy]

Can anyone ID this? It came on some rock I just bought.

[cloak]

Originally Posted by CC WaterGuy

Can anyone ID this? It came on some rock I just bought.

Sponges most likely, unless I'm not seeing what you are referring to.

[.bubbles]

Hi everyone! What started out as me tolerating the hubby's new hobby, has turned into a contagious addiction...I am amazed by how beautiful and amusing the underwater world is. However, there is so much to learn! Reading all the support that exists in forums is almost as amazing to me; the generosity of everyone here to use their time and energy to help one another is awesome!

Anyway, the reason why I am posting:


In the attached pictures you'll see these orange string/hair/filaments? that are all over our tank. They are on the live rocks and sand (I only took pics of the ones in the sand, can't get a good enough macro shot to clearly show the ones on the rocks.)

We only just set-up this 90gal tank (we purchased the entire system, livestock included from another member earlier this week.) It was running bare bottom before and during the set-up we put in new sand. All the inhabitants seem to be doing okay...fish seem happy and the corals almost look better than when we had first seen them during inspection before the move.

So...what are these orange strings?? They're everywhere..if they are pests...what should we do about them?

Thanks in advanced!

[cloak]

Spaghetti worms. (Terebellid) These are a great part of your CUC.

http://www.reefkeeping.com/issues/2002-06/rs/index.php

[SunReef_Victor]

Hey all! Newbie with reef aquarium and saltwater aquarium! Got some new live rock, covered in coralline algae of course but there was an odd purple patch and after a while it sprouted green things! Anybody have any idea?

[Sugar Magnolia]

Originally Posted by SunReef_Victor

Hey all! Newbie with reef aquarium and saltwater aquarium! Got some new live rock, covered in coralline algae of course but there was an odd purple patch and after a while it sprouted green things! Anybody have any idea?

Green star polyps.

[SunReef_Victor]

Originally Posted by Sugar Magnolia

Green star polyps.

Ooh! Should I remove a piece of it and move it to the top of a piece if my LR that is closer to the light and in the flow of my Powerhead?

[mdreef03]

A few of these came on my live rock when I bought them. Now it's spreading. Is it some kind of algae? Good or bad? Please help identifying. And the if here's a solution if it's bad. Thanks a bunch

[mdreef03]

The red bubbles is what I'm referring to on the previous pic.

[cloak]

Originally Posted by mdreef03

A few of these came on my live rock when I bought them. Now it's spreading. Is it some kind of algae? Good or bad? Please help identifying. And the if here's a solution if it's bad. Thanks a bunch

Check this out.

http://www.saltcorner.com/AquariumLi...CritterID=2087

[QuiGonJay]

Two for one question: ideas on the odd worm like thing and bonus points if you can I'd the white circle things. About 50 to 80 of them popped up on the glass overnight. Been there for 4 days now, no movement, they are hard but can be scraped off. Eggs? As always thanks for the collected wisdom!

[QuiGonJay]

Sorry here is photo with worm and white egg like things.

[mdreef03]

Originally Posted by cloak

Check this out.

http://www.saltcorner.com/AquariumLi...CritterID=2087

Awesome! Thanks again cloak. I'm going to get on this asap

[Sugar Magnolia]

Originally Posted by QuiGonJay

Sorry here is photo with worm and white egg like things.

The eggs are nerite eggs. Does the worm move? If not it's a harmless fan worm.