Web pages — Seafish

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  • Separator panels

    A separator panel is a horizontal panel of netting designed to divide the trawl into two sections one above the other.
    Selective device

  • Fish Stimulation

    Fish stimulation being used as a selective device is still a relatively new concept. It is being trialled using a light, sound or electric pulses.
    Selective device

  • Acoustic deterrents

    An acoustic deterrent is a device that emits pulses of high frequency sound to deter cetaceans from approaching fishing gear.
    Selective device

  • Towing speed

    In some situations a change in towing speed can dramatically change the composition of the catch.
    Selective device

  • Diamond Mesh Size

    Most fishing gear is made of netting with diamond shaped meshes, this gives the gear flexibility and a certain amount of stretch.
    Selective device

  • Escape Gaps

    Escape gaps are usually flat pieces of rigid plastic with a rectangular hole in that is fitted into pots and traps to release small shellfish
    Selective device

  • Square Mesh Cod-ends

    This is one of the most effective escape devices available for the release of small undersized round fish.
    Selective device

  • Sep-Nep codend

    The Sep-Nep is an inclined panel of diamond netting to sieve the nephrops into the lower chamber and direct the fish into the upper chamber.
    Selective device

  • Eliminator Trawl

    The eliminator trawl is a standard demersal trawl with very large diamond meshes in the wings and forward part of the trawl.
    Selective device

  • Off Bottom Trawl

    This is a trawl that, by the way it is rigged and towed, swims clear of the seabed but close enough to target some of the demersal species.
    Selective device

  • Square Mesh Panels

    The square mesh panel is one of the most common used and well known selective devices.
    Selective device

  • SELTRA Box - Diamond mesh

    The SELTRA box is a four panel extension section with a top panel of either large diamond mesh or large square mesh to encourage small fish to escape.
    Selective device