This is a classic example of the "WROD" in Neocaridina shrimp...first time I've experienced it in the 9+ years I've kept them...poor girl...they sometimes recover, but usually not...rest of the shrimp in the tank are fine, and breeding well, as are all of my other shrimp in the other tanks
Read more about WROD (WLOD, WBOD) here: https://shrimpkeep.com/white-ring-of-death/
Read more about WROD (WLOD, WBOD) here: https://shrimpkeep.com/white-ring-of-death/