Now she is worrying me, I was watching her this morning and she started acting really strange...she kept swimming on the bottom and then she would scrape her side on the rocks in her tank??? Is this normal, maybe what she does before releasing the babies or should I be worried that something may be wrong? She isn't doing this now but she did it like 5-6 times. I checked the water and everything is fine as far as nitrAtes, trItes and ammonia.