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Dwagenbrenner
09/24/2017, 12:30 AM
Is this a lettuce nudibranch? He is paper thin and about 1.5 inches long. Found him in my refugium today. Hitchhiker.... seems too thin to be a lettuce...

Dwagenbrenner
09/24/2017, 02:55 PM
Well, I've narrowed it down to a flat worm. Still not sure what type. There is a picture of it in "Reef Invertebrates" by Calfo and Fenner on page 178 at the top, but it is not labeled with a name... Getting closer.

rvareef
09/24/2017, 03:10 PM
polyclad?

pagojoe
09/24/2017, 04:39 PM
There are at least 3 similar species of mollusc-eating flatworms, and I'm not sure that all of them have names. One of the similar species is Phrikoceros mopsus. I don't know if yours is that species, but it must be in the same genus if it's not.

rvareef
09/25/2017, 12:14 PM
http://archive.reefcentral.com/forums/showthread.php?t=692774

Dwagenbrenner
09/25/2017, 01:04 PM
Thanks for the info and link. That is definitely it.