Whether it's fish or not, it's certainly not the fish she was sold. Seafood fraud is quite common, according to envronmental and consumer groups. On the other hand, I hear shamwow is delicious in winter.
Note: The version of the video going viral was obviously ganked by a YouTube reuploader who added obnoxious branding and did not give credit to the creator. So this is just a short excerpt; if you know who filmed this revolting fish dinner, tell me so I can salute them here.