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Sexing goldfish (with photos)!

Discussion in 'General Cold & Temperate Water' started by Flaringshutter, Feb 16, 2007.

  1. Flaringshutter

    Flaringshutter Befriend a feeder!

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    At about two years for males, and three years for females, goldfish begin to show signs that can help identify males and females. My darlings started to show and I was able to get a few good shots, so I thought I'd post them.

    Males develop tubercles, white spots on gill covers, as Napoleon, a comet, shows here:

    [​IMG]


    And as my little fancy shows here:

    [​IMG]


    However, Upstart, a female, has compeletely smooth gill covers:

    [​IMG]


    An excellent site with more photos can be found here:

    http://www.bristol-aquarists.org.uk/goldfish/info/sexing-fs.htm



    If anyone else has photos of their goldfish mating or showing tubercles, feel free to add them.
     
  2. Dangerdoll

    Dangerdoll Global Moderator
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    invaluable post, thanks!!!
     
  3. Flaringshutter

    Flaringshutter Befriend a feeder!

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    Short update- I have a new photo of the tubercles visible on the male's fins. Check it out.
     

    Attached Files:

  4. BrkD

    BrkD Unregistered User

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    cool, at what age will they show signs of their sex?
     
  5. Flaringshutter

    Flaringshutter Befriend a feeder!

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    between two and four years, depending on conditions. most show signs at two and a half, but can't actually breed until about three.
     
  6. BrkD

    BrkD Unregistered User

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    thank you.
     
  7. Buckdog

    Buckdog Comet with an attitude problem.

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    Yeah, thanx. I think now one of my Shubs is male. But my two Wakins and the "Halloween" Shub are blank.
     
  8. caitylee

    caitylee Yup....

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    How do you know how old your goldfish are? I have 6 goldfish and I have no idea how old they are.
     
  9. jaysen

    jaysen i eat rats like you for breakfast!

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    thanks for sharing! amazing info. i hope people dont confuse the tubercles for ick.
     
  10. DAVIDFBT

    DAVIDFBT Extinct? Since when?

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    how big are they?
     
  11. Flaringshutter

    Flaringshutter Befriend a feeder!

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    I bought all my goldfish when they were under 2 inches long. From my experience, that means they would have been between one and three months old, since most feeders are raised in ponds or large tanks with ample growing room and ample food. That's how I know how old they are. If you buy goldfish when they are older, from an LFS rather than a breeder, then it can be much more difficult to determine age. Size will vary widely depending on environment and genetics.
    Breeders usually keep track of the age of their fish, so buying from a breeder has more benefits than just good broodstock.
     
  12. Reddog80p

    Reddog80p Permanently Dechlor'd

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    I bought comets (1.5")the spring before last, this last fall I had babies in my pond. The parents could have only been a year and a half tops.
     
  13. Flaringshutter

    Flaringshutter Befriend a feeder!

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    sometimes they will breed earlier in ponds. i've had a couple of friends who experienced the same thing, with very young goldfish breeding in their ponds. i'm not sure why, but i imagine it has much to do with the extra room and floating plants.
     
  14. caitylee

    caitylee Yup....

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    My goldfish aren't very big, between 2-3" at the most. Although I just bought yesterday a Shubunkin and a Comet that are much bigger.
     
  15. daniel364

    daniel364 Its not all that bad...

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    Brilliant stuff, ive wanted to find out for years. Such a great help now.
    Thanks
     
  16. bitbot

    bitbot AC Members

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    I don't keep goldfish, but that was interesting anyway.
    I know they live a long time, but I'm surprised they can take take three years to reach breeding age!
     
  17. 7itanium

    7itanium Banned

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    I used to think goldfish were just worthless, ugly, and only good for feeding to much larger fish---

    BUT.. since becoming a member of this forum I have seen some really beautiful speciments, combined with some interesting facts about size and longetivity.

    It almost makes me want to go buy another tank for some goldies (the woman would kill me, as she almost did when I brought home the 2nd 55g lol) but.. they are acctually a very cool fish-- and are worthy of much more than being in feeder tanks, and tiny fishbowns around the world
     
  18. bitbot

    bitbot AC Members

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    You know, I went into a pet shop called Bizarre Pets this week, and one of the bizarre pets was feeder goldfish!

    (They also had stick insects, bush cockroaches, ducklings (!))
     
  19. corrieberry

    corrieberry AC Members

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    Do the males keep their tubercules all year round? Mine have just spawned and I've been examining them closely but can't decide which are which - I just can't see any. Also, how often do they spawn? The last time they spawned was a few days ago, but they're all chasing each other around like crazy now - there are six in the tank, four comets, one common and one oranda, and the only changes I've made in the last few days has been the addition of a new white light. They've never spawned before, but I thought that was just because they are all small and too young to spawn (or so I thought!). The largest is about 2.5 inches.
     
  20. anniejensen

    anniejensen AC Members

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    After viewing this thread, I checked my tank and now realize that my dear Lorraine is a boy! =)
     

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