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

[aspid.dgn]

Hello! Any idea about this one?

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[Rogersaw]

What is this?

What is this?

Can anyone tell me what this is?

 

[jmsilhy]

How about this one?

Same thing, different angle and light:

Sponge?

Thanks!

 

[Vinny Kreyling]

Yes, sponge, nothing to worry about.

 

[jmsilhy]

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

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

Do you guys think this is an asterina starfish?
It's tiny, about 1/4" from tip to tip. Not sure if good or bad, I've read many contrarian opinions...

 

[Crusty1]

Yes


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[Thornbreaker]

ID?

Came in on some live rock from my LFS I picked up this week. Theres a larger one too, but can't get a good picture.

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[Krchfam]

Aptasia?


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[Thornbreaker]

Aptasia?


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Thats what I'm afraid of.

Best to just pull the rock since its new?

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[Krchfam]

If you can, yes. PIA to manage once they start to
Spread. So if your clear of them now, do what you can to get it out!


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[chiefifd]

Can anyone ID this Worm looking thing, it's about 3cm long????

 

[pkstylez]

ID these please...I think tube worms...but verifying.

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[kfisc]

Yes- vermetid snails; they can irritate the coral, but mostly harmless in small numbers.

 

[Vinny Kreyling]

Get rid of them!!!!!

 

[kfisc]

Get rid of them!!!!!

Know of anyone who has actually done that? Once they're in there, it seems like some are always hanging around somewhere.

 

[Vinny Kreyling]

Easy when they're on a plug.

 

[Assapax]

ID these please...I think tube worms...but verifying.

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that is a beauty

 

[Lerch Knives]

New guest in live rock

New guest in live rock

Got some new live rock over the weekend and had a guy show up today. Yellow copopod or shrimp like creature, yellow mostly in color and a little over 1/4" long with a curved back and long antenna. My guess was a massive copopod (I know I'm spelling that wrong) but I haven't ever seen one this large and he has some fairly pronounced "œhands" that have some white detail If anyone can tell me how to post a video i can show you. So far pics haven't shown any detail

Thanks
Lerch Knives

 

[Timfish]

Actually it's an Aquilonastra spp. starfish. People have been misidentifiying them for years. A critical difference between the Aquilonastra genus and Asterina genus is the Asterina species cannot reproduce by splitting (fissiparous) like the Aquilonastra species. Here's a monograph on them with pictures of the different species in the genus. From what I've read and seen in my tanks if they are seen on corals they're probably helping the coral get rid of it's old mucus coating which has to be replenished periodicly and I not only consider them beneficial but essential. here's the links:

https://museumsvictoria.com.au/media/4094/63_2_oloughlin_rowe.pdf

https://www.nature.com/articles/ismej20169

 

[Lerch Knives]

Any guesses ? About 1/4" long

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