Thanks for the links. I looked over the original disease post and it appears to be in the advanced stages. Do you think it can still be saved with the oil of oregano? Should I also try adding some hydrogen peroxide into the holding water?
When I saw it in the store and in the bag on the way home, I was pretty sure it looked like an amano. I believe it had spots and dashes. Size was larger but was inline, imo, with a female amano. Though this photo is from the evening I put it in the tank. The top one has the markings of an amano and the bottom one is the sick shrimp in question. It lost all markings right away, but I thought the milkiness covered up the markings at that point. Also looks like the spot on the shrimp was a lot more mild than it is today.
https://imgur.com/a/6ZGQztz