internet_points 7 hours ago

Lice are a huge problem. If this solution works, it must not be implemented that widely. The news is full of solutions like physical washing, thermic treatment (basically hot baths), loads of chemicals, also huge amounts of chlorine poured into surrounding rivers because the fish escape the farms and spread lice. The lice are really adaptive. There are more and more lice due to higher sea temperatures[0] and increased resistance to treatments.

[0] https://www-nrk-no.translate.goog/nordland/hoye-temperaturer...

igorkraw 8 hours ago

In the beginning of the PhD, to help with rent I contracted to help develop computer vision algorithms in this field, only PoCs, never got very far.

And interesting thing is that the lice apparently evolve super fast, including getting translucent and resistant against poison

  • globalise83 7 hours ago

    That's interesting! They might also evolve a tendency towards moving to the left flank of the fish.

    • ndr42 4 hours ago

      Reminds me of the evolution of fish that prey on scales of other fish to have two distinct types with the mouth on the right or left:

      https://en.wikipedia.org/wiki/Perissodus_microlepis

      Depending on which type is more frequent the other is more successful because the prey is more cautions on the other side...

      edit: spelling

    • greggsy 4 hours ago

      Fish are known to swim in both directions.

codr7 3 hours ago

There are plenty of other problems with keeping fish in concentration camps.

Industrial approaches applied to living beings are just nasty, period.

xeonmc 8 hours ago

Can they be mounted on sharks?

whiw 3 hours ago

If the laser is powerfull enough to kill sea-lice then how does it avoid blinding the fish or giving them retina burn?

  • thatguy0900 2 hours ago

    As long as the fish can still find food that might not matter in a farm environment

James_K 4 hours ago

The hyphen makes all the difference here.

amelius 3 hours ago

Is that safe? What if someone falls into the tank?

jniles 12 hours ago

I would love to see more data on this. Their site makes some bold claims, but it is hard to know how to quantify the effectiveness of the laser treatment, How many units do you need per X fish? After how many hours/ days/ weeks does it take to reduce the parasites to X levels?

Not critiquing the technology, just hard to visualize as someone with no knowledge or experience in the field.

amelius 4 hours ago

It would be more interesting to see what the camera of the system sees.

Grosvenor 14 hours ago

This is exactly the sort of thing I got into tech for. Real world, no bullshit solutions to problems.

I love it.

chriscjcj 11 hours ago

What are the falling pellets?

metalman 3 hours ago

oh man dont I just love lasers, just saying laser makes me feel good, more laser and dont I hate parisites and vermin, laser, zap more zap, less horrible blood suckers, and vermin got a small hobby farm....wont use poisons...so I know, probably not going to get rat lazers, but laser powered rat detectors before it gets all kinetic on there dirty rat asses...,snacks for the ravens

nomilk 10 hours ago

Title was a little confusing; Stringray is just the name of the laser, which is being used to remove sea lice from salmon. Very cool.

  • dang 9 hours ago

    Stingray removed from the title above. Thanks!