I do have co2 I use it as per indicator guides 6hours a day. I’ve been using shrimp fit powder from glassgardten half a scoop every other day and the other amanos and yellows I have are thriving. Attached some other angles please don’t mind my nerite egg collection 😅Blue colour indicates stress. Do you have co2 ? In the picture he doesn't seem blue to bs honest.
After many searches on google I think I have ID’d him as a green lace filter shrimp. Would explain why he looks so different and acts differently too