You are correct the Brook Char ([i:1gkgqois]Salvelinus fontinalis[/i:1gkgqois]) are in Lake Emily; and the Lake Char or Mackinaw ([i:1gkgqois]Salvelinus namaycush[/i:1gkgqois]) are in Lake Pearson. The Lake Char (Mackinaw) in Lake Pearson are quite small up to about 1kg, while the Brook Char in Lake Emily can reach 3kg. Was getting my chars mixed up. Should now be clear as mud!
