Got a hitchhiker or unknown critter?? Check here for an ID

[Tahoe61]

True peppermint shrimp will eat them, there is a Nudibranch that eats them as well as the Copper Band Butterfly fish. All of those remedies come with their own issues though. If it were me I would take that algae out in a heart beat, it's just not worth it. The rest I would either coat in a kalkwasser paste or manually remove if able. You can use boiling water as well.
If you manually remove them you need to get every tiny microscopic piece of tissue or else they just grow back, hence the problem.

 

[miohippus]

ok got up this morning and there is a bunch of these things "swimming" in my tank

front half under microscope

back half under microscope


any ideas what they are?

 

[miohippus]

could they be baby hermit crabs? https://www.gbri.org.au/OldClasses/2012/Dardanusmegistos|StormMartin.aspx?aid=116&PageContentID=3296

 

[jdms2k87]

Have another one, noticed yesterday part of my large monti colony had a white spot on the endside edge, over night it has trippled in size from rtn, saw flesh hanging.
did a full bayer dip. And in spected the coral and found this.

This picture of the cap is about and hr and a half after the dip.
didn't

 

[Tahoe61]

The image provided does not look like a Montipora eating Nudibranch, but that would be my first usual suspect. The area shaded in the lower section does look suspiciously like Nudibranch damage. I would look for neighboring corals sending out Mesenterial Filaments or stinging tentacles but I would be on the alert for the Nudibranch.

Good Luck

 

[jdms2k87]

The image provided does not look like a Montipora eating Nudibranch, but that would be my first usual suspect. The area shaded in the lower section does look suspiciously like Nudibranch damage. I would look for neighboring corals sending out Mesenterial Filaments or stinging tentacles but I would be on the alert for the Nudibranch.

Good Luck

Yes that was my thoughts first, thats why i went ahead with a heavy dip and scrubbed the white part's off.
Didn't see anything resembling a nuid or nud eggs.
closet color is the rose millipora colony in the pictures
for the time being all other Montipora aredoing fine.

 

[NanaReefer]

could they be baby hermit crabs? https://www.gbri.org.au/OldClasses/2012/Dardanusmegistos|StormMartin.aspx?aid=116&PageContentID=3296

Good call [emoji106]

 

[Jizu Puentes]

Anyone know what this spiky mat is? It doesn't look like a sponge and it seems to be immobile.

 

[ReefMadScientist]

Any ideas? Found him grazing on GHA. But not sure if its an opportunist. I stuck it in the sump. Bout the size of a dime. Rather large for an astrina...

 

[NanaReefer]

Definitely an Asterina species. Generally those of color will/do feed on zoas. I've yet to see the solid white ones eating anything but algae. But have pulled several colored ones from my zoas.

 

[ReefMadScientist]

Definitely an Asterina species. Generally those of color will/do feed on zoas. I've yet to see the solid white ones eating anything but algae. But have pulled several colored ones from my zoas.

Thanks. Not taking the chance. I had an asterina issue in my old tank that were sitting on frogspawn bases eating new branches. This was the first one I saw so no need for a Harlequin Shrimp.

Its safe to say this star is "under the stars".

 

[ReefMadScientist]

ok got up this morning and there is a bunch of these things "swimming" in my tank

front half under microscope

back half under microscope


any ideas what they are?

I would go with miohippus.

 

[ReefMadScientist]

Anyone know what this spiky mat is? It doesn't look like a sponge and it seems to be immobile.

Does look like a sponge...

 

[NoStRaThOmAs]

My friend has this gelatinous ball that grows in his sump? The sump had snails and ampipods and macro algae.

 

[Tahoe61]

Have your friend google "conical snail egg mass".

 

[NoStRaThOmAs]

Thought this was some sort of pesky anemone but when I went to take it off the rock it had a hard skeleton so I mounted it on a frag plug. It looks like a Duncan and it's my sis? Any idea?

 

[Jizu Puentes]

Thought this was some sort of pesky anemone but when I went to take it off the rock it had a hard skeleton so I mounted it on a frag plug. It looks like a Duncan and it's my sis? Any idea?

If t is isolated on a frag disk I say let it grow. It ldoes look like a duncan but what size is it? All of my small duncan heads don't show a green color.

 

[NoStRaThOmAs]

It's about a 1/4" in height and the head is the size of an eraser on a # 2 pencil.

 

[justaDutchguy]

Hey guys, just bought a new stick and immediately saw that there's a little crab in it, it doesn't look like a gorilla. I guess you
can't recognise him on the pic but he is in the center of it. The acro is looking good so if i see this little guy there for a couple of days, it can't be bad right?

Looking forward to your thoughts on this!

 

[Jizu Puentes]

Do you have a picture of it under white light?