I have had 2 or 3 of the Snowball shrimps that have a red dot at the 6th abdominal segment before the telson. It is not a big red dot but big enough to be seen easily. And all of the shrimps that had the red dot had died
(some has been nice enough to release her matured young shrimps before death 
). In addition, it is only 1 shrimp at a time when they develop the red dot (seems like 1 shrimp gets it after another died from the red dot). Would it be because I have been feeding them on pellet food mostly or overfeeding? However, the green shrimps that are in the same tank never gets it. Any help on this would be appreciated. 
