Cherry shrimp grow from juveniles to adults in 120 to 150 days. They are expected to grow 2.60 grams of weight every week when kept in optimal water conditions and given a high-quality diet. Even under poor conditions, cherry shrimp can gain approximately one gram of weight per week.
At their largest, most cherry shrimp only measure to be 1.6 inches or 4 centimeters long and 25 grams in weight. They require very little space or food, and you can easily keep ten to fifty of them in a small, 10-gallon tank.