Betting you have some nice fantails not wakins. Wal-mart wouldn't get wakins to sell for $2.99.
Wakin SHOULD have a penduncle sparkle..like a ginrin scale right at the base of the tail. Most breeders cull out the ones that don't. Kind of a signature thing to a wakin.
I've got bunches of wakins and who knows how many wakin babies are in my 300 gallon q-tank. Have to find out next week