This simple guppy breeding cage is a great project that can be built with the kids. I prefer them over any commercial guppy breeder I have tried. Most Breeders are made of clear plastic that breaks pretty easily and in most cases are too small. The shape and size of this cage can be modified to suit your needs. While not the prettiest cage for my breeding operation works very well. If you want to make it pretty I guess you tie some plastic or glass beads to it.