they are MALE chinook jaw bones. they die every year after spawning. and scale zoo if you want some go to sault ste. marie ont. 9my home town) in oct. or nov. of each year you can pick them up by the garbage bag full in 10 minutes. It makes for quite the smell when you have 20,000 dead fish.
Great Northern Exotics
Quality Captive Bred Reptiles