12 Small Juveniles Freshwater Prawn (Macrobrachium Rosenbergii). Plus extra to cover any DOA (Dead On Arrival).These Small Juveniles Prawns are small and will be about 1/2"-3/4" in body length (15-20 days old).  Water temperature should be between 78°F-82°F and Ph between 7.4-7.8 is necessary for the Juveniles to survive and grow.  Please have your water conditions ready before making the purchase. Order are ship Monday, Tuesday or Wednesday of each week.