After submitting the 3x giant bass required for leve completion, NPC Drividot asks the player to submit additional items. That dialogue box ends with the line: "...Unless, that is, I can somehow procure more skyfish."

"Skyfish" should probably be changed to "fish." Assuming skyfish refers to those fish caught using the FSH Lv 45 trait "Skyfishing," and are categorized under Skyfishing in the Records log, there are many skyfish in the Coerthas Central Highlands, but giant bass is not one of them.