I haven’t tested this with the female, but when fishing on a male Zandalari his left arm acts weird and it looks bad. As he casts his left arm twists fully behind his back then flips forward into the correct position to hold the pole. It happens fast but is VERY noticeable.
https://i.imgur.com/3oCxBYB.jpg
https://i.imgur.com/lVApO2F.jpg
https://i.imgur.com/YqFSHKP.jpg