Prawn Perks can be unlocked by finding golden fish eggs and gaining 1, 20, 100 and 200 prawn balls and prawn crackers. Unlocking all fifteen perks is a completionist cape requirement, and unlocking all perks plus achieving the additional 3 perk points is a trimmed completionist cape requirement. Fifty bonus prawn balls are available to players who have obtained level 99 Fishing by speaking to the Prawnbroker.