I have 2 different anemone's in my tank, a long tentacle that i have had for almost 2 years and a sebae that i have had for about a year now. They don't require any feeding but i do feed mine every few days. I buy raw shrimp and thaw it out then use a spot feeder to place it in the anemone and they take hold and eat it everytime. I don't feed them very much, about half a shrimp each time. They have both grown so much and are very healthy. Even though they don't require feeding, it has just always been something i enjoy lol.
55 gallon Aquarium, 75 lbs. Live rock, 760 watt Metal Halide Lighting , Started new in July 2008.