Question about first time ice fishing

Hey there, just found this community today and I have been scrolling through all the top posts, loving every second of it. Some great people and great fish in each one.
I am a super casual fisherman, only go a couple times a year when visiting a friend's cottage, and this year we are trying ice fishing for the first time. (Southern ON - Parry Sound region).
Assuming the ice is thick enough when we're there, and after we are registered, etc, we hope to fish for walleye and pike. That being said, I was doing some research and was wondering about pickerel, as someone had told me once that walleye and pickerel were the same fish with 2 different names.
Is this true? Also, what are some other decent lake fish for eating? I know there aren't many. Any tips for ice fishing / general fishing would be appreciated, thank you so much!