The invention discloses a
metal line marker for fishes. The
metal line marker comprises a line marker body, and the front end part of the line marker body is provided with wedged head; the
tail end of the line marker body is provided with a furcal
tail end, and a basal central shaft of the furcal
tail end is provided with a cylindrical
impact hole; a part of the side face of the line marker body is a cylindrical surface, and the other part of the side face of the line marker body is a marking surface which is not a cylindrical surface); in the process of sticking the wedged head of the line marker body into a marked target object, the resistance can be reduced; because the line marker body is made of
metal and has elasticity, the furcal tail end also has elasticity; in the process of injection, the furcal tail end is located at a close convergence position, and after entering into an operating depth, the furcal tail end is in a more open state compared with the injection process, therefore, the furcal tail end can be clamped in the marked target object; and the cylindrical
impact hole is used for facilitating the accommodating of striker parts for continuously and rapidly calibrating so as to improve the
operating speed. The metal line marker for fishes disclosed by the invention has the advantages of low possibility of falling off, quickness for manufacturing, low requirement on
machining accuracy, and stable and clear identification number, and is suitable for
batch production.