Is this nudibranch?

[bvreefer]

I had nudibranchs like a year ago for my other tank in order to cleaning up aiptasia, as soon as I dropped those guys into water, never got a chance to see them again.
Today, in my small tank, I spot this little guys crawling on the glass, it does look like a nudibranch but I am not quite sure.
Anyone can help?

 

[Jeff Jarry reef]

I had nudibranchs like a year ago for my other tank in order to cleaning up aiptasia, as soon as I dropped those guys into water, never got a chance to see them again.
Today, in my small tank, I spot this little guys crawling on the glass, it does look like a nudibranch but I am not quite sure.
Anyone can help?

Yes it looks like the good guy

 

[gfd71]

Definitely nudi. I had the same thing. They vanish do their job and all of a sudden I had one on the glass for a split second. I think they’re cool looking

 

[bvreefer]

Definitely nudi. I had the same thing. They vanish do their job and all of a sudden I had one on the glass for a split second. I think they’re cool looking

Yeah, I look they are looking too.