It was a rescue anemone, when the light is on it opens up twice the size. It's feeding and eating silverside, I have a 12 inch sebae anemone the wont touch
Still on the smallish size -- might not be an issue, but just something to keep in mind if it starts to looked stressed.
BTW, I would try frozen krill or PE Mysis shrimp instead of the silversides. Myself and other experienced anemone keepers have lost otherwise healthy anemones after their use. Plus, the anemone appears to be an E. quadricolor (( BTA )), they naturally eat very small pray items.
Can you get a picture of the anemone when the lights are on?
It looks like the tentacles are very short -- which could be a sign of it consuming itself for energy, or the clowns stressing it greatly.
Its a Bubble Tip I got from a Local Coral Guy, For some reason he didnt keep it under proper light and flow. So it lost all of its color, he gave it to me, its doubled in size and has begun getting color back on its tips. I think this is due to I have it under good light and flow. Funny thing the clowns barely touch it in the day swimming back and forth in their new home. Ill grab one today Im gonna try to upload a pic of it, when he first got it before he let it go. Its eating silverside once a week.