Black shell shrimp has strong weeding ability. Shellfish eat algae and food residues, which has an indelible contribution to algae removal and water purification. These little guys are conscientious all day and never lazy in eating. Even in the dead of night, people who stay up late can't help sleeping for a short time. It is still eating, and its great goal is to eat all the seaweed and residue. The weeding ability of cherry shrimp is not as strong as that of black shell shrimp, but it can add a little different color.