Once found mainly in the north east Atlantic, in recent years the fish have tended to head north west towards Iceland and the Faroe Isles following their prey of squid and crustaceans.

BBC: Dispute means mackerel is no longer catch of the day

With only two Rangers players, Steven Naismith and Steven Whittaker, called up to the Scotland squad for Tuesday's match with the Faroe Isles, most of Smith's squad will have a free midweek for the first time in several weeks.

BBC: Morale-boosting win for Rangers manager Walter Smith