What causes lice on fish?

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AJ's Dad
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What causes lice on fish?

Post by AJ's Dad » Thu Jan 23, 2020 6:52 am

We had a good day ice fishing at Curlew lake last weekend catching mainly trout. It seems we may have been a little deep for the perch as we only caught one. For the most part the trout we caught were healthy beautiful fish but a few of them had lice on them. One was covered in them. It's was kind of eire looking and I got a little apprehensive even touching the fish to unhook and release it. Any ideas on what causes this to happen?

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hewesfisher
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Re: What causes lice on fish?

Post by hewesfisher » Fri Jan 24, 2020 7:03 am

They're copepods and nothing to worry about. Usually caused from stress of changing water temperature. See it most frequently in spring, especially if water temps rise quickly.
Phil

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AJ's Dad
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Location: Millwood Wa.

Re: What causes lice on fish?

Post by AJ's Dad » Mon Jan 27, 2020 6:50 am

Thanks for the reply. They sure were ugly little critters. Kind of looked like instant rice stuck on the fish

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hewesfisher
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Re: What causes lice on fish?

Post by hewesfisher » Tue Jan 28, 2020 7:04 am

They are ugly and although I wouldn't hesitate to retain a rainbow with a few, I would release any with a heavy infestation simply because that fish would be heavily stressed and unlikely to be good table fare.
Phil

'09 Hewescraft 20' ProV
150hp Merc Optimax
8hp Merc 4-stroke
Raymarine DS600X HD Sounder
Raymarine a78 MultiFunctionDisplay
Raymarine DownVision
Raymarine SideVision
Baystar Hydraulic Steering
Trollmaster Pro II
Traxstech Fishing System
MotorGuide 75# Thrust Wireless Bow Mount

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