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Thread: What is up with this trout?

  1. #11
    Join Date
    Jan 2014
    Location
    Jackson, WY
    Posts
    149

    Default Re: What is up with this trout?

    Thanks guys. I'll contact the Utah Fish and Game and see if I can find out. I'd like to know if I should have harvested the fish to get him out of the gene pool.

  2. Likes siege liked this post
  3. Default Re: What is up with this trout?

    Some type of chemical exposure?

  4. #13

    Default Re: What is up with this trout?

    Quote Originally Posted by stenacron View Post
    Seen this a lot on hatchery fish and in C&R areas... pretty sure its the fishes skin reaction to their slime coat being removed (poor handling, nylon nets, rolling around on the bank, etc.).
    I've seen similar things on hatchery trout, too. Not quite as big, though. Blotches the size of a half dollar or quarter.

    Can't tell you why, but I'd always assumed just a mutation.

  5. Default Re: What is up with this trout?

    Quote Originally Posted by stenacron View Post
    Seen this a lot on hatchery fish and in C&R areas... pretty sure its the fishes skin reaction to their slime coat being removed (poor handling, nylon nets, rolling around on the bank, etc.).
    I have a hard time believing this fish had slime removed in two straight lines bisecting it along two axes.

  6. #15

    Default Re: What is up with this trout?

    Quote Originally Posted by Poke 'Em View Post
    I have a hard time believing this fish had slime removed in two straight lines bisecting it along two axes.
    Don't think it quite works like that. It only takes a small area to be removed, but the blackened skin reaction spreads out from there. I've seen it on quite a few fish and it always looks strangely squared off like that.
    "Joe"

    "We fish for pleasure; I for mine, you for yours." -James Leisenring

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  8. #16
    Join Date
    Dec 2010
    Location
    Laramie, WY---Cape Coral, FL
    Posts
    1,956

    Default Re: What is up with this trout?

    I am guessing it has do with where that fish predominately hangs out and there may be a uv or light and shade issue at play.

  9. #17
    Join Date
    May 2010
    Location
    Southeast Idaho
    Posts
    669

    Default Re: What is up with this trout?

    hyperpigmented melanosis

    A skin reaction thought to be a reaction to handling, stress, or other factors.

    It is kind of a "grey" area as to the causes. Maybe DWR will have some more definite answers for the conditions that cause it.

  10. #18
    Join Date
    May 2012
    Location
    Michigan
    Posts
    354
    Blog Entries
    1

    Default Re: What is up with this trout?

    You guys are all wrong...

    He missed a spot with the sunscreen before going to the amusement park.

  11. Likes CutThroat Leaders, mcnerney, lv2nymph liked this post
  12. #19
    Join Date
    Sep 2012
    Location
    Pittsburgh PA
    Posts
    193

    Default Re: What is up with this trout?

    I have seen when fish spend their life on the edge of a shadow one half is a darker color to better blend into the environment. This is weird though considering line of color is vertical.

  13. #20
    changler Guest

    Default Re: What is up with this trout?

    A muscle or nervous issue may explain the pattern- fish muscle tissue is arranged in relatively straight lines (think the "flakes" of a fish fillet), and I know some fish wind up with dark bands after being electrofished by fish and game agencies. But I'm just spitballin'

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