The bottom quarters are not dark. The lateral line has dark, nasty meat, best left on the cark. Bottom quarters are just like top, only smaller after you remove the rib bones. The belly meat is light, but very oily and large grained. THis rips off the fish when you peel em, and goes in the can with the skin when I am doing it. I might save some for halibut bait though.
This site, about Tombo Ahi (another name for albies, longfins, chicken of the sea) states 60-65% for large specimens.
Tombo
The table below says 54% and has some nutritional data for albacore and lots of other fishes.
Fish yield table
KB
[ 07-10-2003, 03:33 PM: Message edited by: Threemuch ]