It is a Pikerel, or walleye. They do not grow very large and are normally not farmed, like the Zander.
Funny thing, I was looking up the Zander and from the little that I read, there is a counterfeit fish operation that sells farmed zander as pickerel and it is $2/pound cheaper. There is even a dna testing group set up for just fish to counter the problem. Strange stuff.