Low 60s or cooler is a must, high filtration, high aeration etc. As an ambush predator, pike prefer cover and dim lighting. Bright lights will spook the pike and will cause it to become less active/not feed readily. Pike are far from strict piscivores. They will readily eat anything in the water. Studies show that waterfowl is frequently preyed upon, as well as rodents, frogs etc. They are cannabalistic and will consume anything up to 2/3 its own body length. the young typically stay in thicker, shallower cover. Adults tend to be loners cruising deeper water and lurking near weedy drop offs
Esox are a very misunderstood group. Most people dont truly know about their behavior. Sorry but IME and from the research ive seen, pike and other esox are far from the voracious predators that snakeheads are. They are top of the food chain quick predators, but most are not that aggressive.
If you have access to Journals, PM me and ill send you an anotated bibliography of hundreds of great articles of research on Esox.