ID Please

[sswm]

Just found this on my glass:

 

[ThunderGoose]

Looks like a nudibranch. I'm not able to identify the species but most are either harmful or likely to die of starvation. I recommend removing it.

 

[Big G]

Elysia (Caulerpa Slug) Good guy. Eats hair algae and caulerpa

 

[Kamden Uelton]

Looks like a nudibranch. I'm not able to identify the species but most are either harmful or likely to die of starvation. I recommend removing it.

seaslug* nudibranchs are colorful and have "gills" (sorry for annoying you if I did )

 

[sswm]

Elysia (Caulerpa Slug) Good guy. Eats hair algae and caulerpa

Thanks, back in the tank it goes!