You are one of the lucky ones. My fire shrimp.....going on 5 yrs, is very secluded, and I have to really look for him. His mate died about a month ago, but, I don't want to replace it due to the fact that he is so old. I read that the average lifespan is 4 yrs, so I guess I am lucky too.
When I first got them they would stay out in the open, and yes, I could hand feed them. So, enjoy it while you can. Good luck with them. They are indeed beautiful.