5 Blue Velvet Shrimp - Neocaridina davidi Live Freshwater Aquarium Shrimp - 1/4 to 1 inch long by SoShrimp 5 Blue Velvet shrimp for your freshwater aquarium. Shrimp size: 1/4 to 1 inch, juvenile shrimp to young adult. Beautiful light blue color. Free moss will be included for the shrimps to hold on to during shipping. Live Arrival Guaranteed!