A few weeks ago, i saw a caterpillar in tank A. It was eating my anubias! I caught it and threw it out the window.
Yesterday i saw 1 more making a cocoon out of my plants.
Now in tank B i caught 4 more, again making a cocoon.
Size of caterpillar is more or less 1cm. Hairy when underwater. Moves fast in water so i only took a picture after i caught it.
Has anyone experienced this before?