how to stop fish growing any bigger?

  • Thread starter Thread starter snail
  • Start date Start date
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snail

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i want to sell barramundi at 20cm-30cm.
they only remain this size for 6weeks.
i want them to be fat healthy delicious safe etc. But stop growing when i decide.
im happy to keep feeding a maintainence diet all year round.
ive heard that some medicine, additives, foods, plants, chemicals, can stunt growth?
 
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