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Results 1 to 6 of 6
  1. Default Goldfish dying in creek *after* cold snap


    0 Not allowed!
    I work on a university campus in North Texas that has a creek running through it. The creek has goldfish, tadpoles, minnows, and the occasional flock of ducks.

    About 10 days ago there was an ice storm, with temps below freezing for several days. Starting yesterday, there's been a die-off of goldfish in the creek.

    One person has this theory:

    "When fish in ponds are fed during cold weather below the mid 50s (Farenheit), food caught in sluggish fish digestive tracts can end up causing fatal toxemia within about a week of the onset of cold. This has been seen many times with goldfish (might be because goldfish are often stocked in managed ponds that end up getting food added; I didn't find out if goldfish are just more susceptible than other species.)"

    I'm curious if y'all have other ideas of what might have caused the die-off?
    Last edited by Suda Nim; 12-19-2013 at 09:45 PM.

  2. #2

    Default


    0 Not allowed!
    It's true that golfish shouldn't be fed during freezing weather. When ponds freeze over, as long as there is a breathing hole, goldies go dormant but stay alive. Feeding them during that time can cause toxicity, because their bodies won't metabolize the food in a dormant state.

    Your theory is probably what happened to these fish. Whoever is responsible for feeding them should be educated about this.
    20 gal. high: planted; 8 white cloud minnows, 10 RCS, 2 blue shrimp, several snails; AC50, Azoo air. 65 gal: planted; 7 rosy barbs, 6 glofish,, 2 zebra danios, 6 rosy red (fathead) minnows, 3 dojo loaches, several snails; AC110 x 2.

  3. #3

    Default


    0 Not allowed!
    Precisely, goldfish should not be fed once the water temp hits 50 degrees, and should be left without feeding until constant temperatures are assured of higher than water temp of 50.
    2 10 gallon tanks, 1 20 gallon tank, 1 Fluval Edge, 1 29 gallon tank, and one backyard pond.

  4. Default


    0 Not allowed!
    Thanks!

    The university doesn't feed the fish in the creek; part of the EH&S department's hypothesis is that someone has been feeding them. I'm involved in this because I saw & reported some of the dead ones as I was walking by, and the EH&S department has kept me in the email loop.

    A few years back, there was a toxic release into the creek by an upstream business, so EH&S takes fish die-offs seriously.

  5. Default


    0 Not allowed!
    Wait a minute, I gotta ask... Goldfish? Those aren't Texas natives, wouldn't they be worried about the goldfish spreading?
    I hate hearing people say "it's only a $3/$5/$1 fish/shrimp, so it's ok if it dies, I can just get another." It's still an animal! All animals should be treated like they're worth $10,000.
    29 sw: Damsel, shrimpgoby, pistol shrimp, waspfish
    65 fw: Rummies, glowlight tetras, pencilfish, darters, ottos, f betta, goby, dwarf gourami, ninjas
    29 fw: Chili rasboras, pygmy cories, P. Gertrudae

  6. #6

    Default


    0 Not allowed!
    I think they just are concerned something is killing fish in the first place.

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