Recfishwest grew the fish in a hatchery and staff were confident the snapper were big enough to survive in the ocean.
Nursing them to their current size cost $25,000, with the public helping to cover those costs through crowd-funding.
The aim of the exercise, known as the Snapper Guardian Project, was to improve the understanding of the species and to secure pink snapper stocks for the future.
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READ NOWThe launch was at Woodman Point, next to the Cockburn Power Boats Association.