- Certifier :
- MRAG Americas, Inc.
- Certified status :
- Certified with component(s) in assessment
- Certified since :
- 24 Jun 2014
- Certificate expires :
- 23 Jun 2019
Waterhen Lake is in Manitoba, Canada. Since 2014 it has been the location for two certified fisheries, where gillnets are used to catch walleye (Sander vitreum) and Northern pike (Esox lucius).
Walleye are native to the freshwaters of North America, and Waterhen Lake is in the centre of their range of distribution. They have a tapetum lucidum on the retina (a layer of tissue which reflects light, improving vision when light is limited) and so are adapted to feed in crepuscular or nocturnal conditions. Their vision also means they are tolerant of a wide range of turbid conditions.
Northern pike has broad global distribution. It is found primarily in fresh water in a circumpolar band around the world from 35 to 75° North. Pike is a keystone piscivore (fish-eater) species, which has commercial, recreational and subsistence value. In North America commercial fisheries are restricted to northern portions of its distribution, while it is most important recreationally in the south.
Walleye in a commercial gillnet image © Geoff Klein / Manitoba Conservation and Water Stewardship