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Scientists intend to obtain tough fast growing tilapia in sea water

on . Posted in News

SINGAPORE:Scientists from Singapore are breeding tough, fast-growing superfish that have extra amounts of healthy fat and are also disease-resistant and rich in Omega-3 that are able to survive in sea water as part of the efforts to produce more local, high-quality protein.
 
This premium tilapia, being bred in Temasek Life Sciences Laboratory (TLL), will join the ranks of locally produced fish stock - TLL-bred sea bass and barramundi developed by Barramundi Asia, The Strait Times reported.
 
To develop the superfish, the lab has been collaborating with the Agri-Food and Veterinary Authority (AVA) on improving the yield and quality of tilapia through selective breeding.
 
Through the use of technology that can accurately identify fish with desired traits and select them for its selective breeding programme, TLL researchers have been able to breed good-quality and salt-tolerant tilapia, now in the fifth generation, without any genetic modification.
 
Researchers from the lab identify and mate the best fish, also known as the brood stock, to produce schools of tilapia that inherit the superior traits.
 
Since Asian consumers prefer red tilapia, selective breeding also transfers the desired appearance to the offspring. The lab has a mix of red and grey-coloured fish.
 
Currently, the team is working on improving the resilience of the fish so that they can thrive in crowded fish farms and adapt to seawater.
 
"Tilapia is a traditional brackish-water or freshwater fish. In Singapore, we don't have much freshwater sources. But we have a lot of coastal lines, so we are working on adapting our tilapia to grow in seawater," said Dr Liew Woei Chang, research investigator at TLL.
 
TLL is also using a sex-reversal method to produce all-male tilapia as the male fishes grow twice as fast as the female ones. The lab said more male fishes will also prevent unwanted breeding.
 
Some of the "premium tilapia" have been sent to local fish farms to assess their performance and ability to withstand stress.
 
The tilapia breeding programme started in 2011 and TLL is hoping to commercialise the fish in the coming years.
Source:FIS

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