Are red sided nocturnal?? Cleo doesn't come out much during the day, at least that I see, but when the lights go out I see her all over her tank. Is this because red sided are nocturnal or is she still getting use to our household. Zena is just the opposite and is out most of the day and heads for her den or hammock when the lights go out.Also I've had her 1 month which makes her about 3.5 months old.