Why are there no fish in the Dead Sea?

The Dead sea contains extremely salty water which is up to six times the salt content of the ocean. The deepest water is the saltiest, while the surface is less salty because it is fed by the Jordan River. Nothing can live in such salty density; neither animal nor plant. If fish accidentally swim into the Dead Sea, they die immediately because of the high salt content. Also, because salt crystals line the edges of the Dead Sea, nothing can live directly around it either. The Dead sea contains extremely salty water which is up to six times the salt content of the ocean. The deepest water is the saltiest, while the surface is less salty because it is fed by the Jordan River. Nothing can live in such density; neither animal nor plant.