I really like the taste and texture of fried rice noodles. They alsomake a nice coating for flash-fried ingredients like fish. Don't worrytoo much if the noodles don't coat the filling fully as it's the cornflourand egg that seal the fish; the purpose of the vermicelli is to puffslightly for a lovely spiky texture.
Yuzu is an Asian fruit that looks like a yellow tangerine andhas a sharp taste similar to lemon. You can buy bottled juice in largersupermarkets and Asian shops. If you can't find it, then a 50:50 mixof satsuma or tangerine juice mixed with lime or lemon juice is okay.