The videos were not there when I tried to call them up, but I have a idea what they were. I used to have a big jag/dovii hybrid and to amuse him, I attached plastic fishing floats to weights and let Jag move them around the tank wherever he wanted to. I also hung 2 crystals over the center brace to give him another toy. He went for all of it. I even have an betta in my office who flares on command at a orange fishing float dangled outside the tank. Don't laugh about my betta, he is the only thing I could have in my office. For some reason, the management isn't ok with a 55, or maybe 75 tank in my office... In this closet I work in a 5 gallon is the best I can do. I love all my fish, big and small.