This lot is for home-bred mixed-grade dark blue neocaridina shrimp. I do not cull the shrimps. So they are mixed grades. As you can see in this video, some of them have a dark brown tail and/or body due to no culling over generations. You will get a random mix of grades and sizes.

My shrimp tank water parameters: Temperature: 70-75 F, PH: 7-7.4, TDS: 200-260, Ammonia & Nitrites: 0, Nitrates: 10-40, KH: 3-4, GH: 7-12