- As a rare reward from fishing leaping sturgeon (level 70 Fishing required) -- approximately 2 hours on average to get the egg.
- From the golden mystery egg, which gives a random fish egg you not already owned, 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 personal aquariums to put a leaping sturgeon inside the fish tank. Putting it in the tank will unlock one prawn perk, which can be spent at the Prawnbroker.
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