You can keep up to 50 cherry shrimp in a 10-gallon tank. Cherry shrimp are tiny and produce very little bioload, so you can fit a bunch of them into a small tank. As a general rule, you can keep anywhere from two to five shrimp per gallon of water.
If you’re unsure about keeping that many cherry shrimp, try getting just ten of them. Ten is the minimum amount of shrimp to start a colony. Keeping at least ten cherry shrimp will help them feel safer and more comfortable. Plus, you can also get accustomed to caring for them before adding more shrimp into the colony.