Just a few minutes ago a saw a small 1/2 cm long rcs turn over and die
during feeding time. This is my second death that I know of in my 125g planted tank. There are 82 rcs (that I know of) and 7 amanos only. The amanos have been in the tank for almost 4 years, the rcs have been in here exacly 1 week. Out of the 85 only 1 died in the shipping and yesterday I found one dead. I check my water and everything checks out fine... all the shrimps are acting fine, swimming, creeping, eatting and several have moulted it seems from the empty skins. I keep telling myself that in one weeks time two deaths is nothing if the rest are doing fine and that maybe those 2 where just a bit weak. Am I overly worring or should I should I be worried since I have read that rcs are as hardy as they come for shrimps.I mean I was watching the little shrimp fight over a small Micro Crab cyclop-eeze granule with another larger rcs and then he just turned over and died
My temp is 76, ph at 7.5, no nitrite detected, no amonia and nitrates are almost 0 cause my plants use it all up. Now I find my self scanning the entire monster of tank looking for dead shrimps and have found no other but I keep going back and forth looking and frankly its stressing me out 
Any help or advice would be appreciated.
Tha means I have 3 weeks left till the stress danger level is past. Well on the bright side several of the larger females have saddles now.