My female Picasso just lies on the sand bed in one spot while the male Picasso lays next to her leaning on her, they do this at night while sleeping, but its day time now, they usually swim around, when I feed them they go for the food and eat, but when the food is gone, she goes back down to the same spot and lays there motionless, and the male swims a bit, then goes back down to her to lay with her, she does go sideways and moves around a bit, but for the most part she just lies there, I hope she is not ill? Or dying?