The Clinch Knot
Also called the half-blood knot, fishermen use the clinch knot for tying a fishing line to the swivel, lure, or snap line. When you use two half blood knots to tie together the lines, it turns into one knot. So, people call it a blood knot.
One of the most secure knots for fishing used for tying medium sized hooks is the clinch knot. It is one of the strongest ways to secure a hook in size 4 to 4/0 to a line with a size ranging from 6 lbs to 30 lbs. It’s readily used in saltwater fishing as well as fishing in fresh water.
If you are interested in more advice for the Clinch Knot or for more information on fishing knots in general you should visit the above links.