11.Larger individuals may also prey on waterfowl.
There are documented cases of mute swans and great crested grebes being killed.
12.They are territorial and aggressive.
Aggression within the species is common and is caused by fighting for space and food. It happens that larger individuals steal prey from younger pikes.
13.They are mostly active during the day.
A characteristic feature of these fishes is the long time they spend each day foraging and a very fast metabolism. This explains why they can grow so fast when given enough food.
14.Northern pikes live in rushing streams and shallow, vegetated areas in lakes and ponds, as well as in cold, clear, rocky waters.
Because of the cannibalistic nature of these fish, young pike need places to hide among plants to avoid being eaten.
15.Their behavior is closely affected with weather conditions.
On sunny and calm days pikes like to stay in the water thickets near the shore, while in windy weather they are found in deeper and more distant waters.
16.They reach sexual maturity at the age of two years.
Young specimens - one year old - are also able to spawn, but in their case, the quantity of eggs laid is insignificant.
17.Spawning takes place in early spring - in March or April.
The males arrive at the spawning site a few weeks before the females. During spawning, eggs are deposited in vegetated standing and slow-moving water, most commonly in floodplains, oxbow lakes, and shoals. After the process, male remains in place guarding the nest.
18.The pike eggs are sticky and yellow, 2.5 to 3 mm in diameter.
They hatch into fry about 10 mm long, which remain in the embryonic stage for 5 to 16 days. The length of the embryonic stage depends on water temperature, with the shortest duration at 19 °C (66 °F) and the longest at temperatures below 10 °C (50 °F). The survival rate of a 75 mm long larva is only 5%.
19.Young pikes feed on small invertebrates such as daphnia.
As their body weight increases, they quickly move on to larger prey such as flatworms. Once they reach a body length of 4 to 8 cm (1.57 to 3.14 in), they begin to prey on small fish.
20.The high mortality rate forces the pike to grow rapidly.
Annual specimens living in a food-rich environment can reach body lengths of over 30 cm (11.8 in).
26 facts about Northern pike