I has got some plants from a tiny pond on the side of a road not to long ago. It didn’t look like any fish lived in it, it was so small and shady. When I brought home some of the plants I started noticing little bugs and creatures in my tank. I’m the picture you can see one of them. They look like a piece of fish poop until they start moving. It extends its white arm thing and then pulls its self around on my glass. I’m not sure how many there are. Usually they just sit on some rocks in my tank. Anyone know what this is? It’s very small.