I have two females and 5 males. The females are constantly gravid. 
They carry eggs for about 2 weeks or so as far as I can tell. But baby shrimp require saltwater to survive, so you need to remove the parents after the eggs have hatched and slowly increase salinity of the water. When the babies are about 4 mm long, make slow transition back to the fresh water. That's my theoretical knowledge, never raised babies myself yet. But will definitely try soon
They carry eggs for about 2 weeks or so as far as I can tell. But baby shrimp require saltwater to survive, so you need to remove the parents after the eggs have hatched and slowly increase salinity of the water. When the babies are about 4 mm long, make slow transition back to the fresh water. That's my theoretical knowledge, never raised babies myself yet. But will definitely try soon

