Editing Northern pike (section)

===Physical behavioural traits===
Pike are capable of "fast start" movements, which are sudden high-energy bursts of unsteady swimming.<ref name="jeb.biologists.org">{{cite journal| first1=David G.| last1=Harper| first2=Robert W.| last2=Blake| title=Fast-Start Performance of Rainbow Trout ''Salmo gairdneri'' and Northern Pike ''Esox lucius''| date=9 January 1990| journal=The Journal of Experimental Biology| volume=150| issue=1| pages=321–342| doi=10.1242/jeb.150.1.321| url=http://jeb.biologists.org/content/150/1/321.short}}</ref> Many other fish exhibit this movement as well. Most fish use this mechanism to avoid life-threatening situations. For the pike, however, it is a tool used to capture prey from their sedentary positions. They flash out in such bursts and capture their prey. These fast starts terminate when the pike has reached maximum velocity.<ref name="jeb.biologists.org"/> During such motions, pike make "S" conformations while swimming at high rates. To decelerate, they, simply make a "C" conformation, exponentially slowing down their speed so that they can "stop".<ref name="jeb.biologists.org"/> An interesting behavioural trait that pike have is that they have short digestion times and long feeding periods.<ref name="Mann, R. H. K. 1976"/> They can undergo many of these fast bursts to collect as much prey as they can. Pike are least active during the night.<ref name="sciencedirect.com"/>