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

[aquamann183]

Can anyone id these for me? I'm sure it has already been identified, just tons of pages, lol.
Nassarius snails, welks?

Thank you!

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[Ron Reefman]

As stated in the invert forum, these are nassarius snails and are good sand stirrers and cleaners. I've collected some from a shallow sand/mud flat here in SW Florida. They do survive in aquariums but they are also easy targets for predators as well.

 

[deputydawg88]

Any idea what this is?

 

[aquamann183]

As stated in the invert forum, these are nassarius snails and are good sand stirrers and cleaners. I've collected some from a shallow sand/mud flat here in SW Florida. They do survive in aquariums but they are also easy targets for predators as well.

Thank you, I thought that's what they were, I was just making sure.

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[AlSimmons]

Any idea what this is?

It just a harmless feather duster. No worries.

 

[deputydawg88]

It just a harmless feather duster. No worries.

Cheers, I thought so. The white tail and red 'feathers' threw me, however, as the rest of the feather dusters in there are more of a beige/grey colour.

 

[gareth.hubbarde]

Saw this pink worm creature on the sand thus afternoon. Tank is cycling at the moment.

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[AlSimmons]

It's kind of hard to tell from the pictures, but it's probably just a harmless bristle worm.

 

[MT_is_a_Pisces]

Saw this on my glass this morning. No new corals or fish added to take for over 3 months. What is this

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[Ron Reefman]

Saw this on my glass this morning. No new corals or fish added to take for over 3 months. What is this?

Really hard to say from the pics. Google spaghetti worm and see if anything there looks like what you have. If it is, it will probably find a good spot in the sand or on a rock and build a parchment tube to live in. BTW, if that's what it is, they are good filter feeders and do no harm in the tank. I wish I still had some, but my wrasse ate them all.

 

[Sugar Magnolia]

Yep, terebellid worm, beneficial critter.

 

[Yagonyonok]

I'm just starting my first salt tank (40b with 30 lbs dry rock, and 10 lbs live rock from the LFS), and I think I have my first pest. Is this a majano?





The "tube" rock piece was with some rubble rock and I liked the look of it. Anyone know what sort of colony it came from?


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[deputydawg88]

Any idea what this is? The 4 spots at 12, 3, 6 and 9 on the one in the top left circle glow orange under blue light.

 

[Sugar Magnolia]

I'm just starting my first salt tank (40b with 30 lbs dry rock, and 10 lbs live rock from the LFS), and I think I have my first pest. Is this a majano?





The "tube" rock piece was with some rubble rock and I liked the look of it. Anyone know what sort of colony it came from?


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Ball anemone, psuedocorynactis.

Any idea what this is? The 4 spots at 12, 3, 6 and 9 on the one in the top left circle glow orange under blue light.

Looks like some zoanthids.

 

[Ron Reefman]

Any idea what this is? The 4 spots at 12, 3, 6 and 9 on the one in the top left circle glow orange under blue light.

My first thought is that they are palys, either that or zoas.

 

[mariahcolleen]

Friend or foe?

 

[Sugar Magnolia]

Friend or foe?

Stomatella snail. Highly beneficial!

 

[mariahcolleen]

Stomatella snail. Highly beneficial!

Cool! Into the tank he goes.

 

[MuscleFish]

Is this hydroids are good or bad?

 

[Sugar Magnolia]

Is this hydroids are good or bad?

Nothing to worry about, they'll disappear on their own.