Til-Aqua does not use any hormone in their production process. Only temperature change in the first days after hatching is used to change sex from male to female. The end product of the YY-technology is a complete normal male with normal XY-chromosomes. This is in contrast with hormone sex-reversed Tilapia where 50% of the phenotypically males is still genetically female with XX-chromosomes.

Company details

Zandstraat 86 , Someren , 5712XZ Netherlands

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Business Type:
Industry Type:
Agriculture - Aquaculture
Market Focus:
Globally (various continents)

This company also provides solutions for other industrial applications.
Please, visit the following links for more info:

The Tilapia industry, where all male is preferred, yearly tons of Methyl-Testosterone is consumed worldwide......

This giant use of hormones in animal production is not only weird in a modern society, where sustainability and food-safety have top-priority, but gives also a bunch of side effects.

Modern YY-Technology makes use of the natural abilities of Tilapia and environmental friendly genetic selection, to produce All Male Tilapia without the use of any hormones! Therefor Til-Aqua calls their product Natural Male Tilapia (NMT). After 10 years of selective breeding we are now ready for the future with our 99% male-ratio in our Wildtype Oreochromis niloticus (Til-Aqua Silver) with an excellent performance under all kind of conditions.