How to order our YY-Technology?

Can we use mixed sex also for on-growing?
Can I use females of my own strain?
How is transport?
Whole of fillet?

How to order our YY-Technology?

Order YY-sets

You order simply YY-sets. 1 set consist of 1 YY-male + 3 females; all at least 0.2 gram/piece (3-4 weeks old). The females are supplied as mixed sex and have to be sexed after several months growth.

One sex and stocked you harvest every time 99% males from this Til-Aqua broodstock.

For the bigger hatcheries the best option is to order several times a year new sets to obtain a homogeneous production level over the time.

Please réalise that females grow slower than the YY-males; best is to combine females from a previous order with the YY of a next order.

We pack about 50 sets in one box.


Only YY-males

Once you have ordered our mixed sex you can set-up your own female production line. OR you use the females of your own strain (see below)!

Simply order only the YY-males. We can pack in one box about 1,000 YY's (0.2 gram/piece) or less if you prefer bigger ones. In such a case we advise to order every six month new/more YY's to obtain a homogeneous production level.

 Can we use mixed sex also for on-growing?

 Can I use females of my own strain?

Yes you can!

Especially with our Silver YY-males ("Wildtype") we have tested now several female-lines with our YY-male like a Kenya strain, a GIFT strain, a strain from Lake Manzala (Egypt), a strain derived from a gene-pool (Phillapines) and found >95% males! and excellent performance!


If you want to use your own female line please try it first. We cannot guarantee a high male-ratio. We are always interested to get your feedback!

 How is transport?

By air Til-Aqua send only swim-up fry. In our boxes, 60x40x35cm (freight weigth 14 Kg), we pack 10,000 swim-up NMT. In Europe, within a radius of 750 Km, we can ship bigger fry (4 weeks old). Broodstock we can pack about 50 sets in one box: 50 YY-males in one bag and about 350 mixed sex in another bag. After a few months you have to sex this mixed sex for the females. We try to book only direct flights from Amsterdam to final destination.

 Whole or fillet?

Our Red NMT is used for sales as whole fish. Best consumption size is 250 - 500 gram. Above 500 gram and for use for filleting we propose our Silver NMT which grow faster than the Red NMT after 450 gram and has also an excellent shape for fillet.