Sex Change for Fish

Researchers from the National Atomic Energy Agency have engineered a hormone that can change the sex of both ornamental and food fish. Aside from its success rate of up to 94 percent, fish sex change is also affordable.

January 26, 2011

EVERY three months, Agung Wahyudi purchases thousands of nila or Nile Tilapia fish roes from a place not far from his house in Garum district, Blitar regency, East Java. He meticulously selects young hatchlings, aged between zero to three days old, still in their early form resembling small, black dots. The reason for such a young age is that the hatchlings are still in ‘gonad’ condition; without sex organs. “We can still choose the gender,

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