heres a quick bit of relevant trivia for ya, the largest UK loch caught pike ever recorded was weighed in at 77lb and measured 7ft long and although this is almost double the current record (T Morgan in 1947 lomond) of 47lb 11oz it was never declared as such, well not in 1777 anyway
just shows, if they were there then what class of fish could be hiding in the loch's now.