Future solutions for freshwater fisheries
Revival of one of the oldest known fish traps. High catch efficiency on target spicies.
Examples of use:
Catch of escapees from the salmon industry
Catch of live and unharmed fish for:
-Feeding and production
- Sound management by back release of specific size classes of fish or vulnerable species in by catches, i.e. release of Atlantic salmon from catches off brown trout or char
Depth from 2m to 15m. Length from 30m to 180m. Meshsize from 10 mm and larger.
Cost effective time use
The giant trap net is based on the principle that the fish is guided into a chamber which is constructed to contain the fish. The idea is that fish which meet a hindrance tend to swim towards deeper waters.
The height of the trap net is normally decided on basis of the depth and bottom contour of the chosen fishing place. The selected site is usually a well known and good fishing place.
The mesh size used in the box and lead net is normally 30 mm, whereas the compartment containing the fish at the rear end of the trap net has a mesh size of 15 mm. The mesh sizes can be adjusted according to fishspecies and fishsize.
The floating giant trap net is developed for fishing pelagic fish in the surface areas of the pelagic zone. This net is therefore equipped with a much larger amount of cork for floating than the ordinary trap net. The dimension of the floating giant trap net is adjusted according to the targeted fish species. Normally the floating giant trap net is delivered with a depth of 5 meters or 10 m meters.
Revolutionary tool for inland
Design and use: The
labyrinth net (Norw. Storruse) is a passive fishing developed further in Norway, where it
has been tested on tool which effectively catches all species of fish in fresh most of the
species at different localities in southern water.
opposition to ordinary fishing nets the labyrinth net is based on the principle that the
fish shall see the net and be led into it. The outer part consists of a guiding net
fixed at an angle from the shore, covering the whole vertical area from the bottom to the
surface in its full length. The guiding net leads the fish into the first chamber
consisting of two wings, then to a square opening which converges to a narrow passage into
the second chamber. The inner part consists of several chambers successively becoming
narrower until the fish is trapped in the last chamber where it can easely be picked up in
V/ Jon L°yland
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