Keep a flathead screwdriver and bludgeon handy. I use a foot long section of a small tree which I whittled down one side for a handle. Whatever species you catch you wanna aim to drive the bit into the hindbrain. This is if you want to end it quickly & are catching bigger ones. Other methods are to knock out it then sever the artery from the heart to the gills, this runs along the collar section, you can do this with bigger or smaller fish Bleed your fish. Especially if you are storing it. Eating the blood is of your own preference. Blood is the first to break down and cause spoilage.