• kbin_space_program
    link
    fedilink
    107 months ago

    Usually farmed fish, or wild fish caught near fish farms, are the ones riddled with parasites.

    • @[email protected]
      link
      fedilink
      English
      507 months ago

      Pretty sure parasites are widely present among wild fish. Not defending fish farms, but parasites aren’t only present on fish farms

      • tb_
        link
        English
        117 months ago

        aren’t only present on fish farms

        No. But if you keep a lot of fish really tightly packed in the same place those parasites will have a much easier time spreading.

        • @[email protected]
          link
          fedilink
          English
          67 months ago

          Yes. Again, my point is that fish parasites are widely present in wild fish populations and have been since before fish farming existed

          • tb_
            link
            English
            47 months ago

            Yes… But with open net fish farming you get more fish with parasites and more parasites per fish. So it was a lesser problem before.

    • Chozo
      link
      fedilink
      2
      edit-2
      7 months ago

      Pretty sure that’s a selection bias, since most fish that are eaten - or would otherwise be examined for parasites - are farm-raised fish.

        • @[email protected]
          link
          fedilink
          English
          6
          edit-2
          7 months ago
          1. That article neither supports nor denies your claim: it just says parasites have evolved resistance to what was previously used against them.

          2. The major issue there is with the anti parasite treatment: that is what is killing herring.

          3. Parasites do not magically appear from nowhere. They are species which have co-evolved with their hosts for millennium. These fish parasites are extremely common across the entire ocean. Farms just provide a place for large groups of fish to get infected.

          All of which is to say that parasites in fish are common in wild fish which are never near farms.