Basically what the title says: When Aquaculture 2 is also present in a modpack, allow the auto-fishing barge to catch Aquaculture 2 fish.

Or, conversely, add in a configurable loot table for the auto-fishing barge so pack makers can add in other fish or treasures, besides just the vanilla fishing loot table.

The loot table is already configurable, check the server config inside the save file. You want to change it to fishing instead of fishing/fish