Bone fish hooks require patience, and sometimes blood. Yours in fact. Or mine to be specific. It depends on who makes them. My first bone fish hook was made with a flint chip and some sand stone chunks. I donated blood on three separate occasions. The flint cut my knuckle, the sand stone abraded my thumb and the hook was jabbed into the hand holding the sandstone. My second one was less messy. I then made couple with more modern tools and have to confess I am proudest of the primitive ones but am certain archaic natives would opt for a dremel if they had access to one.
Below is a diagram of how a bone fish hook can come from a deer toe bone. I have used some of my bone hooks with limb lines. Half broke. Each hook takes more than an hour each to craft and that is just the crude stuff. Prettying things up takes more time. The hooks I have seen in archeological displays are works of art. Surely they cannot all be that pretty.
The photo below is of four bone hooks and a split toe bone is an example of unsanded hooks. I found a hacksaw cut the toe bone in half nicely and you can tell by the kerf marks that is what I did. I did not have the forethought to photograph the bones I divided with a flint chip. Bleeding kinda does that to your sensibility.
These hooks sure make me appreciate metal hooks.