I would love if the meats and other food items from this mod where somehow integrated with Farmer's Delight.

Perhaps the raw fish meats could get the tag #c:raw_fishes added?
There is also the #farmersdelight:cabbage_roll_ingredient tag and maybe even more?

Also could add some rolls similar to the existing Salmon Roll and Cod Roll?

Being worked on as we speak, should be included soon.

Done - should be present in the next patch or so

Will definitely look into it for the upcoming updates.

Accidentally closed, will come back and update this thread at a later date.

It might be easier to make a separate delight compat mod. That's how a lot of mods go about it (for example, End's Delight adds to BetterEnd, and Nether's Delight adds to the base Nether). Aquatic Delight has a nice ring to it.