On the lake I fish for quality roach there is a fair population of pike,to upper twenties,the singles have developed a behaviour I haven't noticed before and it's lake wide,all of them do this,when you hook a roach they follow it in,but do not attempt to take the roach,instead they wait,just a few yards out waiting for you to return it,then they attack,it's very successful too as the roach flee from the angler,they are not aware of the ambush that's been set,I've tried sitting there with the roach in the landing net out of eight and scaring the like away,but they are patient and cunning and just sit out of sight.