Shrimp die..why?

Hey guys, so I just started my first tank this past week. I had 3 pappermint shrimp and they have all died. One on the first day (i think he was stupid and stressed himself to death vs. My wakemaker) the second one died a two days later but he had a parasite. And nkw my last one died today. My water parameters are perfect. And i target fed them..my clowns are doing great and my hermit crabs. I even have a duncan thats happy as can be. (I know i know i jumped the gun on the coral but he's fully extended and eating a lot.)



Anyways does anyone have a potential thought for why the last one may have died?