Delivering Fish to Shadow Fortnite is the final mission for Meowscles.

To unlock the task of doing so, you have to first be 60 levels or more into the Fortnite Battle Pass and have cleared at least 18 of Moewscles' challenges.

You then get briefed on the final mission to deliver fish to either shadow or ghost. Deciding which faction Meowscles joins.

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Deliver Fish to Shadow Fortnite

First you of course must catch fish, 10 in total. Use a fishing spot, random water, or ice boxes.

Then you have to drop the fish into shadow dropboxes, which are scattered across the map.

Two are at Pleasant Park, Dirty Docks, Steamy Stacks, Retail Row, Lazy Lake and Holly Hedges. You can also find one at Sweaty Sands, Salty Springs, Craggy Cliffs, Misty Meadows, Weeping Woods and Slurpy Swamp

Apporach the dropbox at each of these locations and drop in the fish and you will have unlocked the shadow faction for Moewscles.