[Steelersfan]

Here is a link for Blackjack or Almaco Jack (up to 75 lbs). The Black Jack (two words) looks to be a small baitfish similar to a blue runner. They said they only get up to 3 lbs or so.

For the Blackjack, the food value is listed as good, especially grilled.

http://www.rodnreel.com/gulffish/gulffish.asp?cmd=view&FishID=42