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

[Sugar Magnolia]

It's an asterina.

 

[Akkerman]

Please help to identify

Please help to identify

Hello there, could someone please help to identify these worms, they are growing fast, only on corrals. Is this red planaria? Thank you.

 

[Kanejr10]

Not a super experienced reefer but kinda look like flatworms to me. If they are it bad news.

 

[Ztous]

http://postimg.org/image/4j8vjvhz7/

Not sure what it is. My chaeto came with a wide assortment of micro fauna but this thing is bigger then the rest by a mile. Any ideas what it is?

 

[Sugar Magnolia]

http://postimg.org/image/4j8vjvhz7/

Not sure what it is. My chaeto came with a wide assortment of micro fauna but this thing is bigger then the rest by a mile. Any ideas what it is?

Harmless amphipod.

 

[flananuts]

Not sure what the "pink blob" is that came on my first half of TBSaltwater Rock package but it has been moving since I first noticed it. Appreciate if anyone has an idea what it might be or turn into.

 

[danrobertson85]

Any idea what this is?!

Any idea what this is?!

Hi All,

Just had the wife message me and say she saw this in the tank, just wondering what it is/is it harmful to anything?

Thanks in advance

 

[killinit123]

Hi All,

Just had the wife message me and say she saw this in the tank, just wondering what it is/is it harmful to anything?

Thanks in advance

looks like a type of linkia starfish with some missing limbs to me.. maybe someone else will chime in though

 

[Kanejr10]

My initial thought was starfish but I have no idea on species.

 

[dmac15]

How bad is this guy? I think it's a lot wider than the normal bristle Worms I have. He appeared today, wanted to remove it but it got away

 

[Kanejr10]

If it's a regular bristleworm its fine, if it's a fire worm it need to be removed with caution pic seemed a little bit blurry for me and I'm still not the best at id. If you do remove it without identification be careful fire worms pack a nasty sting

 

[jcw]

Planaria?
1-2015

about 3-4mm long, appear flat, moves like a worm, comes out at night on the glass.


I had a tank crash about 3 year ago. Found flatworms on all the acropora and lost everything (SPS).
7-2012

This one looks distinctly different. Nothing but fish and a leather coral in the tank now. Tank is cleaning up nicely but I found these. Before trying corals again, I thought I'd get an ID on the first one.

 

[Sugar Magnolia]

Top is a harmless chiton. Bottom pic is a polyclad flatworm. They eat snails and mollusks.

 

[jcw]

Thanks so much.

I was looking at it last pm and it did look like it had a shell. It's a little bigger than I wrote. About 1cm in length.

The second one I found on my acropora back in 2012 with bite marks and even found some eggs. (My post above is rather confusing.) I'm pretty sure it's an AEFW. Fortunately, without acropora for the last 3 years, I hope I'm clear of them.

Thanks again!

 

[Darlene1037]

Hi everyone, my name is Darlene and i am new to all this saltwater stuff but used to breed freshies and had a pet shop,anyway, i have coral and invertebrates,one by-colored blenny and a umm lol i forgot but he scoops sand and sifts it through his gills and no other fish.
ok, is this black and orange stripped flat creature, located at the base of the coral in the pic below, good or bad? And where the heck did he come from?
hope someone can help.
TY, Darlene

 

[Sugar Magnolia]

Looks like colonial tunicates, harmless.

 

[StrangeDejavu]

Hoping to get an ID on this snail I found cruising around on the glass when the lights were off. Never seen one with so many feelers before. It's tiny, 1 - 2 mm, same size as a grain of my Special Grade sand.

Snail's foot side facing me

Side view

In a cup

 

[ICE JUICE]

Is this a sea cucmber or worm of some sort?

 

[BrendaddyK]

Can anyone tell me what this guy is, he came in on a frag I got.

 

[Moeshi]

@BrendaddyK
It looks like a common Asterina sp. People have varied opinions on them.