I am real bummed. My Diamond Goby jumped sometime between last night and this morning. I had the back and sides protected with egg crate, but not the sides. He was my favorite also with a ton of personality. I was concerned as he has been much more active all around the tank in the last few weeks, but had mostly stayed on the bottom of the tank since I got him. I have been waiting on a customer canopy for two months now, looks like it did not come soon enough.