I got 3 pikes from george at shark aquarium like 2 weeks ago and I am glad I got 3 because they shift thier agression back and forth between themselves. They are in with two payara and one flavicans cat in 200 gal. 6 sided acrilic tank . Pikes are very cool they really relate to me when I am around the tank, They get mad if I don`t keep feeders in the tank. Lots of feeders in tank and they just chill but when it gets down to a few they start to chase each other more and come up and rub glass where I am. seems like they say hey man wheres the food.