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B.C. man developing less harmful way to harvest salmon selectively

Elected officials, DFO, fishing reps met at Chilliwack boat launch to see demo of new technology
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Live demonstration of his selective fishing technology, RiverTraps, by Peter Krahn at Island 22 boat launch in Chilliwack attracted DFO reps, elected officials and fishing reps. (Jennifer Feinberg/ Chilliwack Progress)

Retired engineer Peter Krahn dreams of the day when iconic B.C. salmon swim upstream to their spawning beds in peak physical condition sa国际传媒 free of any net marks or bruising.

Thatsa国际传媒檚 the goal of the selective fishing technology hesa国际传媒檚 developing.

Krahn set out three years ago to design a fish trap platform that would permit the release of non-targeted fish, helping them to reach their spawning grounds at the sa国际传媒渉ighest level of fitness.sa国际传媒

Now hesa国际传媒檚 in the process of filing for a worldwide patent for the selective fishing systems he named sa国际传媒淩iverTraps.sa国际传媒

Krahn transported two of the prototypes to Chilliwack Tuesday for a demonstration.

Several elected officials, DFO reps, and fishing groups joined Krahn at Island 22 Regional Park in Chilliwack on Tuesday, including MPs Ed Fast, Bob Zimmer, and Rich Perkins, who is the Conservative shadow minister for Fisheries.

Krahn showed how the prototypes work at the boat launch, as well as conducting a live demonstration with a fish trap anchored in a back eddy of the Fraser.

The technology provides sa国际传媒渁n alternate techniquesa国际传媒 to gillnetting and beach-seining, which are used in First Nations economic opportunity fisheries.

So far the federal government has invested $1 million in Krahnsa国际传媒檚 research project through a First Nations partnership, while Krahn contributed $1.6 million himself to get the project up and running. The total investment will be about $4.5 million, Krahn estimated, including the research and testing.

The RiverTraps selective fishing systems include a fish selection platform, containment net, removable wing nets, and a release gate.

sa国际传媒淚n most encounters with other fishing gear, particularly gillnetting and beach seining, the fish are so injured that even if they do make it to the spawning ground they donsa国际传媒檛 have a level of fitness to actually spawn.

sa国际传媒淭hey become just bait after that,sa国际传媒 Krahn explained.

Hesa国际传媒檚 been conducting tests with his two prototypes and has forged several partnerships, including ones on the lower Fraser, mid Fraser, Stewart Lake, as well as on the Nass River Valley on the Meziadin River.

Krahn described a scenario where the trap had six chinook swim into in the containment net, guided by wing nets, half of which were hatchery marked fish.

sa国际传媒淲e dip-net out the hatchery fish, and harvest them. Once wesa国际传媒檝e got them out, there is a curtain that goes down in front of that opening. We manually lift that curtain and out they go.

sa国际传媒淲e have not physically touched the fish. We have not taken them out of the water, which is the biggest stressor. They havensa国际传媒檛 been marked by gillnets.sa国际传媒

That yields higher value fish.

sa国际传媒淪o you can harvest less fish, get a higher price, and have the same economic revenue,sa国际传媒 he said

Prince George-Peace River-Northern Rockies MP Bob Zimmer asked Krahn to explain his reason for the project, adding that he knew the overarching aim of it wasnsa国际传媒檛 just money, but rather a true concern for the fish.

Krahn explained as one of six children, fishing was always a very important part of the family diet and relaxation. His father, who fabricated sheet metal, taught him the importance of seeing a project through.

Growing up with tackle store owner Fred Helmer of the Fraser River Sportfishing Alliance, Krahn said he spent ample time on the river system.

sa国际传媒淏ut wesa国际传媒檙e getting on. We need to bring hope, and training and passion to the young people because theysa国际传媒檙e the ones going to be taking over. Thatsa国际传媒檚 why I am heavily invested in the schools with this.sa国际传媒

High school students and students from UNBC will be involved in ongoing research and fabrication, and the technology has also been tested on the Harrison River.

sa国际传媒淎s fisheries are moving to selective fishing to reduce the harm, it will be up to the regulators who issue the permits to decide which technique will be allowed for the fishery,sa国际传媒 Krahn noted.

sa国际传媒淎ll I am doing is providing another option.sa国际传媒

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Peter Krahn describes the scope of his selective fishing systems at Island 22 boat launch in Chilliwack for DFO personnel, elected officials and fishing reps. (Jennifer Feinberg/ Chilliwack Progress)


Jennifer Feinberg

About the Author: Jennifer Feinberg

I have been a Chilliwack Progress reporter for 20+ years, covering city hall, Indigenous, business, and climate change stories.
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