Crayfish My crayfish are dying

Posted: 03 Apr 2020 10:09 AM PDT

Hi, i bought crayfish 26 crayfish 3 days before from an owner ho w have kept them all in 20G. I kept the small ones in a bowl In the morning when i check some of them are dead... the adult are kept in 20G i lose 2 of them... i don't know how can i take care of them and save!! Please help how i can save my crayfish!?