Nice. My crabs molt often and I always think my triggers finally had got to them but always found them close to a week later lol.
It's also probably because my clown trigger always had it in her mouth lol
Just my opinion - but if water parameters are good and the Shrimp is growing that reddish algae on the antenna between molts then it's healthy. Unhealthy Shrimp molt often and live a short life.