Atya gabonensis shrimp

I keep 3 A. gabonensis shrimp for some time now and they seem to thrive well. I see them filtrating particles from the water at all times. They don't move much. Once they have found a good spot they stay there to feed. I have found that they prefer strong water flow. It is important to say that my tank temp is approx 29-31' Celsius and they seem happy with it.