Zoa eating nudibranch
- Thread starter FRANK48
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Borat
Valuable Member
How do you know you have them?
Borat
Valuable Member
Zoa eating nudibranch are very small and slow moving. Other pods (good ones) like using zoas as a refuge from predation - therefore you can only know you have nudis if you dip zoas in RO water and inspect whatever drops out of them..
vetteguy53081
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You will have to manually remove them with either siphoning thru a tube or netting them out as you find them. Additionally for the next two weeks, inspect daily for presence of ANY eggs they may have deposited. Eggs are VERY TINY
Borat
Valuable Member
Zoas close up for all kinds of reasons - unless you found nudis via RO dip, you can't just assume they are the reason for zoa behavour
mwil79
Well-Known Member
They aren't that small and they tend to be the same color of the zoa they are eating so they pop quite easily. I had a wild colony of zoas a while ago and had a few that were easily seen without dipping. Much larger than a amphipod.
Borat
Valuable Member
Yes, wrasse would.
Borat
Valuable Member
I have a zoa colony thats half open half melted (been like that for a couple of months). i have 3 other zoa colonies with 100s polyps that are nearby and happy. The reasons for why they decide to melt away are little understood.
Alaeriel
Well-Known Member
Highly recommend the dip. If you can, try to gently scrub and siphon the area of the rock around where the frag was too.
fishandstangs
Community Member
Yes I have a melanurus and 6 line that took care of the problem for me. I would also dip however you’d be surprised of what’s on some of your corals!
fishandstangs
Community Member
No problem, I like most of us learned the hard way. But that’s the beauty of the hoby. There’s always more to learn.
Brit’s Fish
Valuable Member
Definitely dip them again. As someone else said, zoa eating nudis are not that small. You can definitely see them in the colony if you’re looking carefully. The other thing to look for and gently scrub away with a soft toothbrush would be eggs on the stalks of the zoas. The eggs end up looking like little swirls.
Nudis tend to come out more at night as well, in my experience with having them, so check later in the day before or after your lights go out.
