Flatworm? Nudibranch? Stomatella?

[astreck827]

Wondering if I can get a quick ID on this guy. He wasn’t on a coral or even near a coral but was found in my frag tank. Doesn’t have the shape I am seeing if red planaria, and he’s not really flat at all. Almost looks more like a nudibranch to me but can’t get a match anywhere. I know I have some stomatella snails but this guys is bright red which I have not seen before. TIA.

 

[shakacuz]

nudibranch for sure. not sure which, though

 

[eraser2001]

Nudibranch

 

[ying yang]

Some kind of sea slug is my guess,which kind idk

 

[vetteguy53081]

Looks like a gumdrop sea slug and Not reef safe

 

[astreck827]

Looks like a gumdrop sea slug and Not reef safe

While I can’t find a lot of info on a gumdrop slug, one difference in seeing in the majority of pictures is the antenna; the pictures I’m seeing have the antenna coming forward from underneath the mantle, while this guy has them directly on top of the head. This guy is tiny btw, half the size of a grain of rice.

 

[thatmanMIKEson]

While I can’t find a lot of info on a gumdrop slug, one difference in seeing in the majority of pictures is the antenna; the pictures I’m seeing have the antenna coming forward from underneath the mantle, while this guy has them directly on top of the head. This guy is tiny btw, half the size of a grain of rice.

I thought it was small, I saw that pod next to it in the second picture, thats a great picture I hope it turns out reef safe, but I would think no way a fish won't pick that off its bright orange and looks like bait.