The Triggerfish skin is an Rare Fortnite outfit. Triggerfish was available via the Item Shop for 1200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Triggerfish Outfit Details
Stick it to 'em.
Fortnite Triggerfish Outfit PNG Images
Here is the PNG images of Triggerfish below!