Why That Dark Meat in Tuna 🐟 Gets Cut Off

That's the blood line. It's pretty pungent but still great flavor if you like fishy flavors.

That's the blood line, it's softer texture and taste like blood/iron

A piece of what ??? TOONA ???? WHATS TOONA ????

Could the dark part be cat food? My cats love fish based cat food

Blood line. Tastes like crap