Unknown nudibranch species...or???

[shrimpnreefdude]

I have no idea what these are. I got a shipment in a few days. The next day, I saw this on the glass. About the size of a small grain of rice.

Then this morning, I see what looks like a congregation of them around one of the new frags. One looks weird with longer tentacles and I can decipher a couple more nudibranch looking creatures in the pile. Any thoughts?

Also started to see these things pop up. I've got no clue what this is either!

 

[ISpeakForTheSeas]

I struggle a bit with species with cerata like this at this point, but those look like they may be Phestilla sp. nudibranchs to me - they're coral-eaters, so I'd get rid of them.

 

[shrimpnreefdude]

I struggle a bit with species with cerata like this at this point, but those look like they may be Phestilla sp. nudibranchs to me - they're coral-eaters, so I'd get rid of them.

Urgh...great. Thanks for the heads up. Plan was to dip and destroy anyway. Any idea on the third and fourth pics by chance?

 

[ISpeakForTheSeas]

Urgh...great. Thanks for the heads up. Plan was to dip and destroy anyway. Any idea on the third and fourth pics by chance?

Ah, totally missed those - yeah, those are Dorvilleid worms; harmless/beneficial CUC.

 

[shrimpnreefdude]

Ah, totally missed those - yeah, those are Dorvilleid worms; harmless/beneficial CUC.

Awesome! Thanks for the confirmation.

 

[shrimpnreefdude]

I struggle a bit with species with cerata like this at this point, but those look like they may be Phestilla sp. nudibranchs to me - they're coral-eaters, so I'd get rid of them.

I dipped that frag right after I read your response. Got rid of everything on it, from what I could see. My worry now, is the ones I don't see. The craziness of owning a reef tank. Urgh...thanks again for all the help!