Possible Clues:

• Mackerel's cousin
• Mackerel-like fish
• Skip Jack with Irish singer going around it
• Any of several large fish of the mackerel family, somewhat smaller than the tunas
• Skip Jack with piece covering broadcast from Oxford
• Fish -- singer eats it
• Mackerel kin
• Tuna's smaller relative
• Food fish related to the tuna
• Tuna relative