Possibly a flatworm? Help id please

impur

New member
Did a WC on my little cube yesterday and saw this guy on the glass. I have not seen a flatworm like this before, any ideas on an ID?

TIA!

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I think it might be a nudibranch, as opposed to a flatworm. Lets see what others think.
 
Hmmm well it definitely does not have any cerata, I'm not sure if there are nudibranchs without cerata?
 
There are plenty of nudibranchs without cerata, but I can't see enough detail to be sure whether it's a flatworm or nudibranch. If it's a flatworm, it's one of the species that mimic nudibranchs (there are a bunch that do). It does look like it has horns or rhinophores, but I can't tell from the pics whether it has an external gill on the dorsum.



Don
 
There are plenty of nudibranchs without cerata, but I can't see enough detail to be sure whether it's a flatworm or nudibranch. If it's a flatworm, it's one of the species that mimic nudibranchs (there are a bunch that do). It does look like it has horns or rhinophores, but I can't tell from the pics whether it has an external gill on the dorsum.



Don

Thanks for the info Don!
 
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