Help! please tell me what this is on my glass

[delosa]

I just found these things crawling on my glass. I have had the aquarium set up for over five months and I have never noticed them before.

I put a picture and a short video of this thing. There are several on my glass.

 

[Thales]

Thats a flatworm, but not the plague kind. That one eats copepods and its fun to watch them hunt.

 

[tywtly]

Whoa, that's cool! I hope some of those show up in my tank.

 

[corw314]

I have them too! I was wondering what they were....thanks!

 

[delosa]

Thanks for the help. I was really worried it was something bad.

 

[DWhatley]

Thanks Thales!

I was feeling guilty and lazy. I knew they were harmless but ate something minor that was desirable. For the life of me I couldn't remember what they were or where I had gotten the answer myself when one showed up in my seahorse tank. They really are interesting to watch but mine died off pretty quickly. I even tried to culture one in a small pico tank (that has lots of pods) because they were interesting but was not successful.