Reef Man Dan
New member
That is definitely what it is. What appears to be cilia really through me off. Thanks!
Pix & ID: Critters that come in your rocks: the good and the bad.
- Thread starter Sk8r
- Start date
thrawn150RT
New member
SantaMonica
Well-known member
Asterinas
Reefer54
New member
this has been growing on my snails shell for the last month or so.....never seen one like it. It seems to have sweeper tentacles or the like that come out of the center top...they look unclear in the picture and video, but they are there.
What it is (question mark) (my kids broke my question mark button, and my "sideways N" button too)
What it is (question mark) (my kids broke my question mark button, and my "sideways N" button too)
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Rob in Puyallup
New member
Looks like a macro algae of some sort. Caulerpa, I think. I'd be happy to have a rock covered with those.
Rob in Puyallup
New member
Here we go... http://en.m.wikipedia.org/wiki/Acetabularia
Rob in Puyallup
New member
Welcome! 
Hi everyone!
Well, today I rearranged my filter and was pretty astonished to find what appears to be a slug like creature living amongst my bio balls in my filter..
The thing was moving around when I took out a media sack and it appeared to be stuck to it - but I'm wondering what it actually is??
Thanks heaps in advance,
Matt
Well, today I rearranged my filter and was pretty astonished to find what appears to be a slug like creature living amongst my bio balls in my filter..
The thing was moving around when I took out a media sack and it appeared to be stuck to it - but I'm wondering what it actually is??
Thanks heaps in advance,
Matt
Rob in Puyallup
New member
Looks like a flat worm to me.
hogfanreefer
Active member
Polyclad worm. Bad guy! Hope he was alone.
He was alone, I accidentally squashed him when I rearranged the filter, so now I don't feel that bad for him lol
hogfanreefer
Active member
If you smashed him in to pieces you may have another one soon. They can regenerate from just a part of the original worm. They usually are active only at night. Another reason to occasionally look with a flash light at night.
If you smashed him in to pieces you may have another one soon. They can regenerate from just a part of the original worm. They usually are active only at night. Another reason to occasionally look with a flash light at night.
After I got your comment I took the filter apart and removed the squashed worm just to be safe, I don't want those things living inside my tank - particularly in my filter!!
ID on these please? Nudibranchs? Munnid isopods?
ID on these please? Nudibranchs? Munnid isopods?
I found a TON of these while trying to find out why my Zoanthids were all closed up.
I suspected they were nudibranches, but they proved to be extremely resistant to Flatwork eXit, which is supposed to kill Nudibranches very effectively. I also tried Lugol, and only ridiculously high concentrations (to the point of turbidity) killed them. After they died, my Zoanthids opened up, so I am almost sure these guys are responsible (I didn't see any other parasite at the bottom of the container that may have been killed by the dip, so I doubt it was something else). After a few weeks, significant numbers of these critters are back in the same places.
For more information they vary in size between ridiculously tiny (0.1mm or so) to small (2mm, perhaps three in some cases). They are almost transparent, and move a lot.
I obviously cannot add a gallon of Lugol to my tank, so I need to find a better solution. Right now, I am killing them one by one with a pin, and sometimes with a laser (I may need to get a bigger one for this to be effective).
They live only in the rocks that are near the zoanthids or on top of the zoanthids themselves. Small numbers don't see to affect the zoanthids much, but once they get to significant numbers they seem to affect them seriously. I haven't seen any effect on other corals.
Ideas about what they are or what I can do with them?
ID on these please? Nudibranchs? Munnid isopods?
I found a TON of these while trying to find out why my Zoanthids were all closed up.
I suspected they were nudibranches, but they proved to be extremely resistant to Flatwork eXit, which is supposed to kill Nudibranches very effectively. I also tried Lugol, and only ridiculously high concentrations (to the point of turbidity) killed them. After they died, my Zoanthids opened up, so I am almost sure these guys are responsible (I didn't see any other parasite at the bottom of the container that may have been killed by the dip, so I doubt it was something else). After a few weeks, significant numbers of these critters are back in the same places.
For more information they vary in size between ridiculously tiny (0.1mm or so) to small (2mm, perhaps three in some cases). They are almost transparent, and move a lot.
I obviously cannot add a gallon of Lugol to my tank, so I need to find a better solution. Right now, I am killing them one by one with a pin, and sometimes with a laser (I may need to get a bigger one for this to be effective).
They live only in the rocks that are near the zoanthids or on top of the zoanthids themselves. Small numbers don't see to affect the zoanthids much, but once they get to significant numbers they seem to affect them seriously. I haven't seen any effect on other corals.
Ideas about what they are or what I can do with them?
Shane5four
New member
Any idea what this hitchhiker is?
Any idea what this hitchhiker is?
Hello,
This critter is currently hiding behind my protein skimmer so i cant get a better picture... But the attached pic shows something that came on a piece of rock that has a few mushrooms on it. It didnt move for over a week. Its probably hard to identify from this pic but i figured i'd give it a shot.
Thanks!
Any idea what this hitchhiker is?
Hello,
This critter is currently hiding behind my protein skimmer so i cant get a better picture... But the attached pic shows something that came on a piece of rock that has a few mushrooms on it. It didnt move for over a week. Its probably hard to identify from this pic but i figured i'd give it a shot.
Thanks!
Attachments
I found a TON of these while trying to find out why my Zoanthids were all closed up.
I suspected they were nudibranches, but they proved to be extremely resistant to Flatwork eXit, which is supposed to kill Nudibranches very effectively. I also tried Lugol, and only ridiculously high concentrations (to the point of turbidity) killed them. After they died, my Zoanthids opened up, so I am almost sure these guys are responsible (I didn't see any other parasite at the bottom of the container that may have been killed by the dip, so I doubt it was something else). After a few weeks, significant numbers of these critters are back in the same places.
For more information they vary in size between ridiculously tiny (0.1mm or so) to small (2mm, perhaps three in some cases). They are almost transparent, and move a lot.
I obviously cannot add a gallon of Lugol to my tank, so I need to find a better solution. Right now, I am killing them one by one with a pin, and sometimes with a laser (I may need to get a bigger one for this to be effective).
They live only in the rocks that are near the zoanthids or on top of the zoanthids themselves. Small numbers don't see to affect the zoanthids much, but once they get to significant numbers they seem to affect them seriously. I haven't seen any effect on other corals.
Ideas about what they are or what I can do with them?
Those are harmless munnid isopods that are quite beneficial, eating detrtus
Need a better picture.
