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  1. #1

    Are my koi fry ... koi fry ?

    All,

    Beck in September I bought some fry, currently I am housing them in a 1200L indoor container. They’re growing well, eating extremely well and look great ... but ... they don’t look like Koi.

    I understand young fry don’t look like their parents but my fish don’t have barbels or the koi body shape.

    I believe they’re about 4 months old. Can anyone assist me by letting me know if they’re koi ? Thanks all. Louis.




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  2. #2
    I leave it to someone with more experience but to me they don't look like koi, no barbels and no top fin.

    John

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  3. #3
    I am not the most experienced on here either but if no barbels I would say goldfish.

  4. #4
    Thanks for the comments so far, I suspected that the lack of barbels might mean that they’re not koi. I have contacted the breeder who insists they are. Strange.

    Is there anyone who might be able to identify what fish they are ?


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  5. #5
    Is the breeder well known? It might be that the barbels develop later. Have you got a pic of the top fin extended?

    John

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  6. #6
    Extreme Koi Member Rank = Grand Champion john1's Avatar
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    Where did you get them from?
    Hard to say but as said above if no barbels then goldfish,but i do believe goldfish start black then slowly change,to be honest it looks like a koi,have you had a good look?
    John

  7. #7
    Thanks again,

    John1 .. I have had a good look but no barbels. I don’t know what else to look for, I am new to this. I have asked the breeder who is from West Yorkshire but has a huge setup and seems to know what he is doing and insists they will grow them later but these guys are 3/4 months old and most posts suggest koi have barbels from berth.

    Any pointers on what else to look for ?


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  8. #8
    Member Rank = Nisai Jasec's Avatar
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    I would say looking at the pics they are carp, koi?
    Was the fish bought online? If so what was the description of the ad.
    If not what exactly did you ask for ie mix, single colour koi etc

  9. #9
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    I think they are probably koi - the barbels arnt very evident untill they get bigger - take a look at this picture :-
    https://www.researchgate.net/figure/...fig2_322083707

    All the koi in the picture are the same age/spawning I think but only in the biggest 15cm koi are the barbels evident.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

  10. #10
    Thanks pip 285. I believe that they are very similar to those pictures.

    Does anyone have any advice how to stop the growth dispersion mentioned in the article? I have some still the same as they went in and others 4x bigger. I previously read it was a genetic issue ..


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  11. #11
    Extreme Koi Member Rank = Grand Champion john1's Avatar
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    To be honest Louis i dont really know,but to me they look like koi.
    I have reared koi from 6 weeks old a few times but to be honest never really noticed the barbels on them,as for the different sizes that allways happens as the bigger ones scoff all the food and hence they keep growing,survival of the fittest thats nature for you.
    John

  12. #12
    Senior Member Rank = Nanasai Gray's Avatar
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    I can't say for a fact what they are but personally if someone put them in my hands and asked what sort of "fish" I thought they were I'd say they are a common carp (part scaled) and mirror carp (full scaled) based my previous years of carp fishing. Added to that, they don't seem to have any marginal Koi features but that could just be my naivety when it comes to Koi fry.

  13. #13
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    Quote Originally Posted by LouisFSR View Post
    Thanks pip 285. I believe that they are very similar to those pictures.

    Does anyone have any advice how to stop the growth dispersion mentioned in the article? I have some still the same as they went in and others 4x bigger. I previously read it was a genetic issue ..


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    Im sure genetics is in the mix but the environment and feeding regime are just as important. Having sufficient space and being able to feed sufficiently will be very important. I imagine that if you are limited on what you can feed - due to filters etc, then fewer larger feeds would give the smaller fish a better chance of getting at the food.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

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  15. #14
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Hi,

    At that age and size it is very very difficult to spot a barbule, you might get a hint on a the more developed fish and blowing up your photo there is a possibility that there is a tiny hair there but the image isn't high enough resolution to make a call.

    The 2nd set of images are carp, whether they are Koi carp or a cross between the two isn't possible to call.

    Dave

  16. #15
    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    All I can say is that I've had lots of Goldfish fry and never had any that look like this, so I'd say with a degree of certainty they are not pure goldfish.

    Koi barbels can normally be made out from around 2 weeks old, but can take 5+ weeks if they are only developing slowly.

    Koi / Goldfish hybrids can look like Koi when young and they don't grow barbels. I couldn't ascertain if that is the case here.

    If you only showed me the top 2 photos in the first post I would have guessed it might be a Crucian Carp, but the subsequent photos make me doubt that from a colouration/scaleation perspective.

    The lack of colouration also points to carp. Are all the fry this colour? Any idea what variety the parents are claimed to be?

  17. #16
    According to one of the top Japanese breeders us westerners always feed too big a pellet. You need to only feed the size that your smallest fish can eat comfortably. You don't need to mix bigger pellets with smaller ones. The bigger fish will digest the smaller pellet easier anyway.
    This allows all fish an equal chance of getting food.

    John

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  19. #17
    Looking at the pictures, one or two are carp, whether they are koi is yet to be seen.

    One looks like a Doitsu though

  20. #18
    Update: fish are growing ups and from below you can see the barbels. I am edging towards thinking they are koi now.

    Out of the 105, I have lost one and 2 have ailments. Both are pictured below. I have a missing gill plate and a clouded eye. Are any of these contagious ?

    As always all advice and tips appriciated


    [IMG]https://uploads.tapatalk-cdn.com/20190109/b622c290489bc04017f44cead50924b1.jpg[/
    IMG]


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  22. #19
    Moderator Rank = Supreme Champion Feline's Avatar
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    I would suspect genetic defects with those two. Breeders would normally cull these as soon as it is noticed.

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  24. #20
    Extreme Koi Member Rank = Grand Champion john1's Avatar
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    I would put those two to sleep,for the best Louis.
    They have grown well for you,keep up the good work.
    John

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