This is a three picture Instructable.
Add a Coral reef to your house / Garden
1) Buy a Euphorbia tirucalli (Fire plant) from your local garden Supply http://houseplants.about.com/od/succulentsandcacti/p/PencilCactus.htm
2) A plastic red clownfish from the local .99 store (or aquarium supply)
(I used a Christmas ornament, it was a bit shinier)
3) Hang fish from one of the stems