There isn't one single scientific name for a freshwater shrimp. The term "freshwater shrimp" encompasses a wide range of species, belonging to different families and even orders.

Here are some examples of freshwater shrimp and their scientific names:

* Atyidae (Atyid shrimps): This family contains many popular aquarium species, such as the Caridina (cherry shrimp, bee shrimp) and Neocaridina (red cherry shrimp, blue velvet shrimp).

* Palaemonidae (Palaemonid shrimps): This family includes the Macrobrachium (giant river prawns), which are larger and often kept in ponds or tanks.

* Caridina: This genus encompasses a wide variety of small, colorful shrimp often kept in aquariums.

To get the specific scientific name, you'll need to know the exact species of freshwater shrimp you're interested in. For example:

* Caridina multidentata (Cherry shrimp)

* Neocaridina davidi (Red cherry shrimp)

* Macrobrachium rosenbergii (Giant river prawn)

If you have a specific freshwater shrimp in mind, I can help you find its scientific name!