The pool at Coarthas 8, 9 (Dragonspit) is not accessable to Gulleye IV (lv 55), so it must be 60. There's also a hellfishing hole at Halo (the entrance to Aynx Trine and Churning Mists) that's similarly hidden.

I am having a hell of a time trying to locate Three-lip Carp. It's a level 52 leve turn-in. I even tried ff14angler and xivdb and no one's reported it there yet.