[Tennyson]

I just purchased a serpent starfish about 2-3 days ago, and acclimated it fairly well (for about 1 hour and 45 minutes to two hours) It seems OK now, adn I know that its eating because it ate one of my dead/dying green chromises.

But I'm not sure whats wrong with it, or if this is normal behavior, but it keeps staying in a small cave, with only its arms sort-of out. It doesn't even come out at night.

Is this normal behavior of serpent starfish, I heard that after they are acclimated, they may look dead for 2-3 days, is this true?