- As a rare reward from fishing swordfish (level 50 Fishing required) -- approximately 3 hours on average to get the egg.
- From the golden mystery egg, which gives you a random fish egg you do not already have, with no Fishing requirement. Golden mystery eggs can be obtained from prawn balls (1/200 chance), or as a 100% reward from using a golden prawn cracker (or having it used on you). One golden mystery egg is also the tier 2 prawn perks reward from the Prawnbroker.
The eggs can be used on the bathysphere in your aquarium to put a swordfish inside the fish tank. Finding the egg will award you with one Prawn Point, which you can spend on a Prawn Perk at the Prawnbroker in your house.
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