Hey Fed, being a hardened fisherman you might know the awnser to this. A while back me, my dad and 2 of my dads mates went to Cuba and went Deep Sea fishing, (which was fab!). The thing is all we managed to catch was 15 Barracuda, which wasn't a problem at all. But my dad at the end managed to catch himself a 'Yellow Jack' and the guy on the boat who took us started jumping up and down with joy shouting 'Yellow Jack, Yellow Jack'. We never did find out what was so special about them, don't suppose you do do you?
Thanks
Chris