Sorting by gender increases profits
Our Machine Solutions
Greenfox Marine delivers the world’s first automated gender sorting machine for farmed fish.
The next generation of machines are ready for the market, fully integrable with vaccine machines and with significantly increased sorting speed.
Greenfox Marine Wins the Innovation Award 2025
The win is an important recognition of the technology we have developed for automatic gender-sorting and comprehensive health screening of smolt, based on medical ultrasound and artificial intelligence (AI).
The technology integrates seamlessly into existing vaccination lines, enabling sorting by both sex and a range of health parameters — all in one efficient process. We are pleased that the award highlights the benefits to the aquaculture industry, including reduced mortality, improved fish welfare, faster and more consistent growth, optimized production management, and increased profitability.
Read more about our technology and the award at aquanor.no
Freedom to operate
Greenfox Marine ensures you have full freedom to operate when using our services and products.
We respect third-party rights by conducting thorough assessments to prevent infringement of patents and other intellectual property rights.
GreenFox Marine AS is not involved in any litigation regarding infringement of patents or other intellectual property rights.
In 2024, we secured approval of our Norwegian patent for automated gender sorting of farmed fish.
Compatible with all vaccination machines on the market
Our gender-sorting machines can be integrated with any vaccination machine on the market.
Compact and highly adaptable, the unit can be easily installed at any suitable point along the production line.
Suitable for Atlantic salmon, trout, and coho
The machine is particularly well-suited for sorting Atlantic salmon, trout, and coho. Fish weighing from 20 to 500 grams can be sorted with an accuracy rate of over 95 %.
Since the first sorting in 2022, we have processed millions of salmon — both in Norway and in international markets.
Gender sort fish based on internal and external health factors
As part of the sorting process, fish are scanned using high-resolution, medical-grade ultrasound.
A range of internal and external conditions are assessed, including gender, kidney calcification (nephrocalcinosis), heart deformities, and early sexual maturation.
Sorts from 5,000 to 40,000 fish per hour
With a capacity of 5,000 fish per hour per line — and the option to align up to eight lines — the system keeps pace with the fastest vaccination machines on the market.
Fish are sorted by sex and health. Any fish found unfit for production are automatically removed.
What the Industry Says About Greenfox Marine
The technology used in the sorting machine for broodstock is both fast and very accurate. This will save many operator hours and lead to us being able to gender-sort larger quantities than we do today. The accuracy of machine sorting also seems to be higher than with manual sorting.
Mona Rosta
Production Manager
Breeding operations and Smolt
AquaGen
Mowi is very interested in automated ultrasound based sex sorting of pre-smolts for improved utilization of broodstock licenses, and potentially improved performance and management of fish stocks in commercial production sites.
Matt Baranski
Genetics Manager
Mowi Genetics AS
Product Sheets, Research and Documentation
Fill out the form to download product sheets, research on gender-sorting, and results from trials that gender sort fish.
Meet Us at Trade Fairs, Conferences, and Seminars
Our goal is to offer you the best solution for gentle, fully automatic gender sorting of farmed fish. Therefore, we regularly participate in trade fairs, conferences, and seminars — both nationally and internationally.
If you’re attending as well, we would love to meet you! Schedule a presentation of our machine solution right now, or book a meeting to discuss your specific needs.
24. - 26. March 2026
AquaSur 2026 – Puerto Montt, Chile
21. - 23. April 2026
Seafood Expo Global 2026 – Barcelona, Spain
5. - 7. May 2026
HavExpo 2026 – Bergen, Norway
22. - 23. September 2026
AquaNext 2026 – Stavanger, Norway
15. January 2026
AqKva Konferansen 2026 – Bergen, Norway
2. - 3. December 2025
Tekmar 2025 (delegat) – Trondheim, Norway
21. - 22. October 2025
Fish Farmer Konferansen 2025 – Clarion Hotel Air, Sola, Norway
19. - 21. August 2025
Aqua Nor – Trondheim, Norway
6. - 8. May 2025
Seafood Expo Global – Barcelona, Spain
23. - 24. April 2025
Smoltinar 2025 – Tromsø, Norway
9. - 10. April 2025
Smoltinar 2025 – Trondheim, Norway
2. - 3. April 2025
Smoltinar 2025 – Haugesund, Norway
4. - 5. February 2025
Tekset – Clarion Hotel & Congress, Trondheim, Norway
16. - 17. January 2025
Aqkva-konferansen – Bergen, Norway
3. - 4. December 2024
Tekmar – Clarion Hotel & Congress, Trondheim, Norway
16. - 17. October 2024
Fremtidens smoltproduksjon 2024 – Nofima, Sunndalsøra, Norway
16. October 2024
NCE Aquatec cluster – Quality Hotell Prinsen, Trondheim, Norway
18. - 20. September 2024
IceFish 2024 – Reykjavik, Iceland