??? I found this in my tank

[sandsifter]

Please help if you know any information.

I found a flat blanket like creature. It has browns, greys, and a little pink tone to it. It wrapped itself around a hermit crab. It moves really sneeky. I think it came in with a rock I didn't purchase it. Does anyone know what this creature could be?? Thanks

 

[beckyd]

I have no idea. I hope someone else does! Can you take a picture?

 

[BlueStraggler]

It sounds like a flatworm also known as a spanish dancer.

 

[quaddity]

Sounds like some kind of flatworm.

 

[sandsifter]

Thanks guys it is a flat worm. I haven't seen it again but if I do and can get a picture I will post it thanks again for your help.