Here is another pic I found...the first is from another hobbyist...this one is a decent peek at one I had for a few years....its since passed on...eventually I may add another but then again I may not. They sometimes can be difficult to properly feed...without adaquate algae to constantly munch they sometimes refuse prepared foods and can actually starve to death over a long period of time. I fear thats what happened to mine so I may hold off on adding another. At first mine had pleanty of hair type algaes to munch...but after 18 months or so I started to notice less algae and the lawnmower slowly deteriorated. Very kewl additions though in systems that can sustain them if they refuse prepared foods.