i think its hard for the hobbiest to use scientific names....... most, including me dont know all that. We know what the LFS has labled.
I get "neon" wrasses in all the time at my shop.......as i label and price them, they labled as 4 line wrasses.......
i have 1 each in my reef tank, my look down tank, and my lil 11g via aqua display up front in the store.
They are a beautiful fish, much more so in my opinion thaan the 6 line. but are pesky, and can be down right mean. and agressive.
just like any wrasse, watch for ornamental shrimp feasts, pods ad worms..... all will be eaten.