Well, the other day I went upstairs only to find both of my cats sitting around my 10 gallon tank. I went over to investigate only to find one of my 3" YoYo loaches on the floor not moving. I went to touch it to see if it was still alive and it promply jabbed me in the finger with its eye spine, so I picked it up and plunked it back into the tank. After some heavy breathing and shedding a layer of cat hair covered slime, the loach settled down as if nothing happened. That was three days ago and it is still doing fine. I don't know how long it was out of the tank and I can only imagine that the cats must have got a good jab or two from the little guy otherwise it would have become a quick meal. I am still not sure how it got out but I have added a piece of plastic between the canopy and the front of the Aquaclear filter. I hope this does the trick. That is one lucky loach. 