Tuna damage-free fixing ring with ejection type satellite sign

The utility model provides a tuna damage-free fixing ring with an ejection type satellite sign, which comprises a fixing ring main body fixed on a tuna fin spine, the fixing ring main body is a ring sheet with an opening, the fixing ring is a ring sheet formed by curling an alloy sheet along the width direction, and the alloy sheet is 30mm in length, 15mm in width and 3mm in thickness; the outer wall of the fixing ring main body is an outer curled surface, the inner wall of the fixing ring main body is an inner curled surface, an inscription plate for marking information is arranged on the outer curled surface, a plurality of barb thorns are distributed on the inner curled surface, and the barb thorns are fixed with fin spines; a steel wire rope sleeves the outer side of the fixing ring main body and is connected with the ejection type satellite sign. The alloy fixing ring faces downwards along the barb end and faces upwards along the reverse barb end, and the opening of the fixing ring is aligned and sleeved