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

[pagojoe]

Hi only been at this 3 months and loving every minute. Found this awesome lil guy in the tank last night. Been trawling the net and wondered if anyone Knew exactly what it is? Its a slug for sure but what type and is it a nuisance in a reef setup?

Yeah, it's a tritoniid nudibranch. Not all nudibranchs are bad, but you'll want to remove this one.

 

[Un5tab1e]

Id please

 

[cloak]

Maybe a Peanut worm?

 

[ArrowCrab]

First pic, some grouping of coral perhaps?

Pics 2 and 4, the red stuff feels fairly firm

Pics 3 and 5, feels soft and is like a gelatinous blob, it recently detached from the rock and slowly floated around the sand till it tumbled into a corner and got stuck. I've seen a bunch of smaller ones sprout up around the tank as well.

Any ideas?

 

[Bakerman]

1 kinda looks like colonial yellow polyps.

 

[Sells]

Help identifying please?

Help identifying please?

I need help identifying these small white cylindrical structures. I've attached pictures of of my live stock and can send water parameters if needed.

 

[Bakerman]

Spirorbid worms. Totally harmless filter feeders. Sign of healthy tank. Can be sharp so watch the hands.

 

[Sells]

Thank You!

 

[relexus]

Got my RSM filled with live rock since nov 28th. It is one big surprise everyday.
Discovered so far : a tiny white crab with little black tips on his or her claws. Two tiny feathers and this in the picture below.
It has multiple feathery "arms" and it retracks in a hole? Got two of those. Has anyone got any idea.

 

[relexus]

Sorry for the blurry picture but it is the best i could do. Can any identify what this is?

 

[seahorsedreams]

First pic, some grouping of coral perhaps?

Pics 2 and 4, the red stuff feels fairly firm

Pics 3 and 5, feels soft and is like a gelatinous blob, it recently detached from the rock and slowly floated around the sand till it tumbled into a corner and got stuck. I've seen a bunch of smaller ones sprout up around the tank as well.

Any ideas?

1 are colonial hydroids and 2 & 5 are Red Bubble Algae, Botryocladia. It's not the "good" branching Botryocladia, unfortunately. I can't really see 2/4.

 

[relexus]

Found this, it looks like an up side down xmas tree. One is blue the other green, has anyone got an idea?

 

[Sugar Magnolia]

Your pics are really to blurry to tell.

 

[seahorsedreams]

1 are colonial hydroids and 2 & 5 are Red Bubble Algae, Botryocladia. It's not the "good" branching Botryocladia, unfortunately. I can't really see 2/4.

That would be 3 & 5.... hit the wrong key. (2 and 4, I can't see).

 

[relexus]

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

How come that i cannot post any pic over here? Tried it 3 times. But still nothing

Edit : oke this posted let's put a picture with it.
Can anyone tell me what this is? They look like upside down xmas trees

 

[Sugar Magnolia]

Well, that's not much better. It's probably Christmas tree worms, harmless.

 

[dragonsong]

I'm seeing bunches of these 1-3" long whitish, sometimes banded worms with 4 antennae on their heads. They come out at night and eat either algae or the tiny critters in it (or both) and leave trails of sandy waste behind them. They move moderately fast kind of like a centipede.

 

[C.Eymann]

I'm seeing bunches of these 1-3" long whitish, sometimes banded worms with 4 antennae on their heads. They come out at night and eat either algae or the tiny critters in it (or both) and leave trails of sandy waste behind them. They move moderately fast kind of like a centipede.

baby enucid worms?

 

[Sugar Magnolia]

I'm seeing bunches of these 1-3" long whitish, sometimes banded worms with 4 antennae on their heads. They come out at night and eat either algae or the tiny critters in it (or both) and leave trails of sandy waste behind them. They move moderately fast kind of like a centipede.

Nereid worms, harmless. http://chucksaddiction.thefishestate.net/hitchworms.html

 

[dragonsong]

baby enucid worms?

I would actually throw the tank right out the window if they all ended up growing to that size :eek2:

Nereid worms, harmless. http://chucksaddiction.thefishestate.net/hitchworms.html

OOooh this is definitely it. Right down to the behavior, i saw one snatching pods last night. They are sort of neat and actually are slowly helping out with an algae problem on a couple of the rocks. Thanks!!