They used bones for tools and the meat part and organs for food. Then the white settlers came. They fished for salmon, yet they did not use every part of the salmon's body and the salmon population started to decrease. Later salteries and then canneries were developed. Salteries are places where people salt fish to preserve them.
Canneries are places where fish are canned to sell in stores.
They still only used the meat part of the salmon. The canneries poured the excess parts of the salmon into streams causing pollution. This caused the salmon to die faster. Hatcheries were built to save salmon. But salmon born in hatcheries could not find food , jump, or protect themselves as well as wild salmon.