A fish stringer. The device comprises a rope with a spear on one end and a tie-off loop on the other end. A tubular casing is included for sheathing the spear in a safety position when not in use. The locking assembly includes a J-shaped slot in the side of the casing that receives a knob on the side of the spear. A biasing member, such as a spring inside the casing urges the spear into the locked position to prevent accidental removal of the spear from the casing. After the first caught fish is speared, the spear is threaded through the tie-off loop. There is no need to tie off the rest of the fish in the string, making the stringing of the rest of the caught fish faster and easier.