tedr is right, Clowns do not feed the anemone. If anything they will steal the food from it. As a correlary, you must feed your anemone if you want it to do well. Light alone is not sufficient.
To Aqua Dave's post, there is much debate over how much to feed an anemone. As he points out, there is a correlation between how often you feed and how big they grow and how often they split.
Most people feed once or twice a week.
I used to feed every day but small amounts.
Dave feeds once a month.
But as Dave says, more food means more nutreints in the water. Also, cutting shrimp up is a good idea, I use chicken sheers to cut my shrimp.
However, I am unclear what Dave means by salad shrimp. Most people agree, you should feed raw thawed meats to your shrimp. Any fresh seafood works good.
"yes sir, how many jumbo shrimp will that be?"
One please
"one pound yes sir"
No sir, not one pound, just one
"???"
good luck, Kevin