August 3rd, 2017 by paul-aquanor

Innovation Award nominees: Ace Aquatec

A lot of stunning technology is launched and presented at Aqua Nor. But few are stunning in the same sense as the groundbreaking fish stunning technology from Ace Aquatec. Their electric stunner renders fish unconscious before they even leave the water – decreasing fish stress levels and offering a more humane alternative to traditional mechanical stunners.

In traditional stunning systems there is a literal fish out of water-problem. After taking the fish out of the water they live and thrive in, they get pumped out of the water and then stunned by pneumatic, percussive or electric devices, often mechanical ones. The drawbacks associated with these methods are many.

  • There are problems with fish that differ in size – some fish are not properly stunned.
  • The fish is stressed, triggering cortisol to release into their body – which in turn lowers quality of the filet.
  • There is a significant limit to how many fish it is possible to stun in a given time – often one at a time.
  • The systems are often mechanical – requiring spare parts and repairs.
  • Mechanical systems are also prone to downtime.

Ace Aquatec claims to have found the solution to all these problems, and focus especially on fish welfare and humane stunning and killing of the fish in their presentation of the technology.

An unwanted compromise
“We saw that fish farmers had to compromise between efficiency and humane stunning. Our system stuns 100% of the fish, every time. It also stuns them in the seawater – so they are not stressed before they are rendered unconscious.  Some methods of slaughter cause fish to die over long periods of time – we wanted to improve this process for aquaculture and wild fishing vessels, for all species including crustaceans”, says Executive Manager Director Nathan Pyne-Carter.

An Ace Aquatec stunner can here be seen at Swiss Alpine.

Pre-pump stunning
Of course there are other electrical stunning technologies on the market. But no one else can offer stunning before the fish is transported through the pump towards the processing line. Typically electric stunners are used after the fish is already on a dry conveyor belt – on their way to be blead. By this time they have both suffered and been stressed.

Euskan has sheared this layout of a pre pump stunner.

No harm to the fish
It has taken the engineers at Ace Aquatec close to 10 years to perfect the electric current. Too much, and you damage the flesh. If you stun side to side you can create a current that transfers from fish to fish. Too low and the fish is not properly stunned. Ace Aquatec can now show independent research studies that document both that there is no damage to the fish flesh or skin, and that the fish is 100% unconscious before bleading and slaughtering. “We’re not worried about being copied for quite some time. This is precision work and finding the right settings and equipment is extremely hard”, says Pyne-Carter.

Many other applications
The market opportunities for Ace Aquatec seem to be almost endless. Since the technology works regardless of fish size, it is also transferrable to many farmed species other than salmon and trout, such as yellowtail, cod, seabass, seabream, halibut and turbot. And, at a lower setting, the system can be used as an anesthetic for vaccinations. It has also been adapted to stunning crustaceans and prawns.

The system has only one limitation when it comes to stunning rates; the flow speed of the pumping system. How much you get out of the technology depends on the pumping system used by the fish farmer.

On the nomination
“We think it is really exciting to be nominated for the award. An acknowledgment by such a prestigious body, accompanied by such fantastic companies such as the other nominees, is really a recognition we appreciate. We owe our greatest thanks to our customers. They’ve helped us refine and further develop our technology every step of the way. The final product is nothing more than an expression of what they’ve told us they need.”

Ace Aquatec will be demonstrating one of their pre-pump systems on the stand of their Norwegian distributor, Sterner AS, located at stand D-324.

For more information contact:

Executive Managing Director
Ace Aquatec Ltd.
Nathan Pyne-Carter

The Nor-Fishing foundation

Exhibition adress:
Trondheim Spektrum
Klostergata 90
7030 Trondheim, Norway

Visiting adress, administration:
The Nor-Fishing Foundation
Havnegata 9, entrance 1
7010 Trondheim

Mailing adress:
The Nor-Fishing Foundation
p.o. box 1251, Torgård
7462 Trondheim, Norway
+ 47 73 56 86 40

Here you can see the website for Nor-Fishing


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