Only difference is that every catch can count, and not just those damn moat carp.
Seriously, Lu Shang, you needed 10 000 level 11 fish, you could level up to level 15 max on this top (or so) and the rest was just a huge lost of time.
At least in FFXIV, you do this achievement while leveling up to cap.
Pryssant Novio - Ultros Server.
<Chocobo> <cooking>? <Yes, please>!