transmute shining scales 10 scales and 10 fish fin
They're only used for the wand recipe and not very difficult to get in their own form.
An easy place to get them is the Acropolis - winnow ice fish then catch the 2 or 3 fish remaining. You'll get 1 or 2 chests, most of which contain shining scales. You also have a chance at getting the Aquilan Duel Chariot perm mount!
Since they're only used in one recipe and only 3 needed, most wizards who enjoy fishing have spares they don't need. If you hate, hate, hate fishing...I'm happy to sell some for you if you like?