unknown algae/slug looking thing!!!!!!

I have these weird green things on the glass in my aquarium. they look like leaves but have one red dot on them. When i use my algae magnet to get them off the glass, they curl up and turn into a slug looking thing and crawl away. I hope they aren't a pest or something. My corals are doing fine though. What is it!!?

 

Sounds like a nudibranch to me.

 

That's what i thought too. But they keep on multiplying and i thought nubibranch's died in tanks because of insufficient nutrients or something like that.

 

Can you get a picture?

 

I tried but they are very small (biggest one is about 3mm)

 

Has anyone had these mystery creatures or algae crawling around on the glass of their aquarium?

 

Any picture would help us identify the creature. Even if it's fuzzy. Try using different modes and angles with the camera. Try not to use much zoom.

 

okay i got a picture but i'm not sure how to get it in the post lol. i'm new to 3reef

 

You can't see the red dot but it is located at the bottom of the thing and it has one little spike too