I'm level 24 fisherman and I snagged one of these bad boys in Rabao with Composite + Rogue rig. Nothing special because the rig snags just about anything if you try long enough.
These sell for 392 each to the goblin in rabao and have a pretty good bite rate with trout balls. I caught 4 with 6 bait in not too long with 36+4 fishing and composite rod