Can anyone ID this yellow spikey slug?

[Arwen0greenleaf]

I just found this little critter sliding on my glass. Anyone know what is is and if it’s a pest?

[spectra]

Thats a nudibranch and more than likely no good........... what type of corals do you have ? 

[Arwen0greenleaf]

Yes, I have zoas and a Euphyllia… any way to get rid of them, or is all hope lost?

[Ohmegg]

Let me guess...you have some zoanthids that are acting funny right? 

[spectra]

17 hours ago, Arwen0greenleaf said:

Yes, I have zoas and a Euphyllia… any way to get rid of them, or is all hope lost?

 

Not all hope is lost. If zoas are on plugs then you can dip but best thing to do is look for more. I know in the past have spotted these and after only one did not find anymore. Also look for eggs on any plugs. 

[ubpr]

There is seaslugforum.net that could be helpful wit ID. More browsing and search than asking, not much activity there, but they have a good data base.

[demonclownfish]

Looks like all the zoanthid eating nudibranchs I've seen over the years

[Tired]

Nudibranchs are generally the same color as what they eat. I see bright colors on this one, so it's likely eating whatever you have that's that color.

[lakshwadeep]

Yeah, nudibranchs have very specialized diets, so they are not far from their food sources.