How do you know if any of your shrimps is dead if you couldn't see a dead body? Initially I have about 12 Amano shrimps. I think they are doing OK in my heavily stocked tank in plants and 1 inch Tetras. Throw in 1 CAE too... Recently, I didn't see a lot of them to come out by the front of the tank. It could be due to the amount of CO2. However, CO2 is off at night. My drop checker is arriving tomorrow. If some of them are dead, shouldn't I at least see the bodies??? I found 2 clear, empty shells though. Today I just got more Amano shrimps from Rachel here. I should have total of 24 Amano shrimps. FYI, I also have couple of Red Cherry shrimps too. They are out and in the open too.