Good or bad nudis?

[Phyber]

I've never seen one before and just now I saw two on the rockwork. Under tank lighting they are a bright orange/red.

Any ideas?

 

[Gareth elliott]

Look like zoanthind eating nudibranches to me. But far from an expert on sea slugs.
@KJ

 

[LAReefer4Life]

Look like zoanthind eating nudibranches to me. But far from an expert on sea slugs.
@KJ

+1

 

[ScottB]

Looks like some bad hombres there, but encourage you to check for yourself by looking here:

Account Suspended

 

[Phyber]

Thanks all. It might explain why I can't grow ant zoa's. I'll keep my syringe handy for any others I see.

 

[ScottB]

If you can pull those colonies and dip, I would.

Also a few wrasses in there will control the population. Melanurus and yellow coris are my go to predators.

 

[Phyber]

If you can pull those colonies and dip, I would.

Also a few wrasses in there will control the population. Melanurus and yellow coris are my go to predators.

I have a few frag plugs of zoa's, but most have a dab of super glue on them holding nto the rockwork. I have some Seachem Reef Dip iodine on hand...would it be worth it to try and break these free and dip? Never seeing these before, what are the odds these are the only two?

 

[Gareth elliott]

I have a few frag plugs of zoa's, but most have a dab of super glue on them holding nto the rockwork. I have some Seachem Reef Dip iodine on hand...would it be worth it to try and break these free and dip? Never seeing these before, what are the odds these are the only two?

If you see one there are more. They will lay eggs in a curved or almost circle formation. Dipping will mot kill eggs. These have to removed by hand or require a fallow period of no zoas.

 

[Phyber]

If you see one there are more. They will lay eggs in a curved or almost circle formation. Dipping will mot kill eggs. These have to removed by hand or require a fallow period of no zoas.

I am seeing that Salifert flatworm exit will work as well with multiple treatments... Would you know the lifecycle timing of the eggs to adult period? Or what the fallow period would be?

 

[vetteguy53081]

No good- predatory. Need to go bye-bye and also start checking for eggs as they leave many

 

[ScottB]

My general rule on pests is 4:1 or four present for each detected. Aiptasia, nudis, flatworms, whatever. Totally unscientific but it motivates me to address the issue.

Gluing frags is much harder than pulling them. I would pull them and dip CoralRX and inspect under lighted magnification to find others, and the eggs which the dip does nothing for. Scrape them away.

 

[Phyber]

My general rule on pests is 4:1 or four present for each detected. Aiptasia, nudis, flatworms, whatever. Totally unscientific but it motivates me to address the issue.

Gluing frags is much harder than pulling them. I would pull them and dip CoralRX and inspect under lighted magnification to find others, and the eggs which the dip does nothing for. Scrape them away.

Will they be located just on zoa's? No other risks to my lps/SPS?

 

[stanleo]

Looks like some bad hombres there, but encourage you to check for yourself by looking here:

Account Suspended

Love that link, thank you. Hopefully the author will do write ups on the individual specimens they have listed.

 

[ScottB]

Tough to say for sure, but probably safe to speculate they came in on your zoa frags and are species specific predators.

There are also monti eating nudies but I understand those to be a different species.

#reefsquad feel free to correct or amend this assertion as I am no pest expert.

 

[ScottB]

Love that link, thank you. Hopefully the author will do write ups on the individual specimens they have listed.

You are welcome. Of course I got that link from another contributor on this forum, so just paying it forward!

 

[reef lover]

If theyre flourescing theyre zoa eating.

 

[Retro Reefer]

I would agree with others, not something you want in your tank.. If you found two you probably have twenty! Dipping zoas and looking for eggs is a good place to start. Check your tank at night with lights off you may see more (I use a red light).

 

[Fishurama]

Nudis are always good! LOL

On a serious note, those look like a zoa eating nudis and you should kill them ASAP. Manual removal works best. Getting their eggs is a pain as dips dont work.

Their eggs.

 

[GoldeneyeRet]

Definitely bad.

Nudis are usually very specific in what they eat so if they are eating your zoas they should not pose a threat to anything else

 

[DSC reef]

They look like zoa eating nudibranchs. As mentioned, keep an eye out for more.