Fire red shrimp are not a naturally occurring species, but rather the product of selective breeding.
The consensus is that it was developed from the red cherry shrimp, which in itself is selectively bred from the wild freshwater shrimp
Neocaridina heteropoda, a native to Asia that has no red color. Neocaridina davidi is a freshwater shrimp from Taiwan which is commonly kept in aquaria. The natural coloration of the shrimp is green-brown.
There are a wide range of colors such as red, yellow, orange, green, blue, violet, black, etc., however, the red morph is more frequently sold