I recently bought 10 marble hatchets. They spend nearly all of the daylight hours huddled together, typically in a calm area. One or two will stray for a minute or two. When the lights go off they are off to the races! They spread out and swim around. Anyone else seen this? They don't appear to be hiding during the day, they just don't seem to have any interest in moving around.
Any thoughts?
Any thoughts?
