Introduce a lion fish to the coral reef.
A further note to collectors: Clown fish do not need anemones in your aquarium. The anemone is only needed where predation can occur, and does not do well with attempts to collect and display it.
You can use an artificial representative. The clown fish can be happy, and everyone can be happy.
Remember what the clown fish says: The enemy of my enemy is an anemone.