Sardines are about 6 inches, depending on females or males. they are great on charcoal, with fat dripping, and a potato and salad!! As good as Salmon, done the same way, or even in a pan at home, no need for grease. of course, sardines inside house create lots of smoke.
Quick recipe is to get canned sardines throw them in a salad mix bag and squeeze a lemon then put a salad dressing vinaigrette shake and you have quick meal.