i guess you can feed them to fish. most people keep them as pets. i found this.
Size:
2.5-3.5cm
Temperature:
wide range, but best kept at 70°F-80°F Water Parameters:
Can live under conditions that are soft and slightly acidic (ph 6.6-7.0) to very hard and alkaline (ph 7.0-8.4 and above). Very adaptable shrimp. Is most productive and does best in soft to medium hard water with a ph in the alkaline range. Might not reproduce at all in water that is too acidic. Food:
Algae, fish food (flake, pellets etc)