Someone stole its tail ????
A commercial fisherman showed a mate of mine how to bleed fish , the way they bleed the tuna that fetch $200 000 each ……and he showed me ….
Do NOT kill the fish …and dont worry about the tail ….. cut the main artery between the gills and the heart …..and let the fishes own heart pump its blood out ….
With the likes of blue cod etc you gotta be careful not to damage the heart which will kill it …..sharks you gotta cut thru the underbelly near the head to access the area …a little practice and its easy as ….