some of the most deadly fish have been found in the river tigris valley is on and it also has had many new species found in it and  is home to the whell known "Hypostomus plecostomus".  fish you might find in your local pet store.

other fish including  giant saw headd fish were first found in tigris valley's river and are now found all over the world and are big deadly fish. Tigris valley has broke the record for most fish decoverys in one river. In total 83 different fish have been found in tigris valley.  thats a lot of fish