How many California fresh water shrimp are left?

There is no specific data available on the exact number of California freshwater shrimp remaining. This is because:

* They are not a single, easily-countable species: California freshwater shrimp is a term used to refer to a number of different species, including the Pacific whiteleg shrimp (Litopenaeus vannamei), which is now primarily farmed rather than wild-caught.

* Population data is limited: While research has been done on specific populations of California freshwater shrimp, it's difficult to gather comprehensive data on the total number across the state.

* Numbers fluctuate: Like many other species, their populations can be affected by factors like habitat loss, pollution, and drought, making the numbers constantly change.

However, it is important to acknowledge that many freshwater shrimp species in California are facing decline due to various environmental pressures.

If you're interested in a specific species, you might be able to find some data from research organizations or government agencies.