Blue Galaxy Guppies

Blue Galaxy Guppies

I tried to produce Blue Galaxies by crossing a Blue Grass strain with my Galaxy Guppies. I figured out that if the snakeskin genes of the Galaxy is a dominant gene, then the snakeskin patterns should appear in the outcome of the crossing.

I was right, the outcome of the cross did result in a few male Guppies that showed the galaxy traits and is washed out in blue. It was exhilarating! When you actually get the results that you were only imagining about at the initial start, the satisfaction is just exhilarating.

I know that there are breeders out there who are also trying to produce blue galaxy guppies. Somehow, it is a version of guppies that many could see in their mind and have thought about producing. However, the blue galaxy have remained elusive. I have yet met or know a guppy breeder whom have succeeded fixing a line of blue galaxies. For those out there still attempting, I wish you the best of luck. I would really love to see a tankful of blue galaxies in a beautiful planted tank. That would really be awesome.

Blue Galaxy Guppies

Ok, lets get back to my story of trying to produce the blue galaxies. After doing the said cross, I manage to get the progeny. However, these blue guppies only start to appear in the 3rd generation. When I looked at the progeny in F1 of the cross, I was quite disappointed because the fishes that appeared looked nothing like the fishes above. They looked very plain and appeared like normal snakeskin guppies, nothing like galaxies and neither do they have the beautiful spots like the grass guppies.

I didn’t give up after seeing the results of the F1 generation. After many years of breeding guppies, I understand a thing or two of genetics and told myself to stick it out and do another crossing between the male and female of the F1 generation.

I crossed my fingers hoping for a miracle in the resulting F2 of that cross and with astute patience decided that I will strike the jackpot this time around.

My patience paid off and there in the tank among plain colored guppies, I saw my first Blue Galaxy. I was elated!

I kept the fish for a while and tried to cross it back to another normal colored Galaxy, hoping that some blue galaxy guppies might appear again. No luck this time around, normal colored galaxies appeared.

Due to me having to manage so many tanks and many batches of young, I lost this strain. Sometimes, you just get so bogged down with doing so many things that you lose focus. I don’t know about you but I think I can be over ambitious at times and I lose focus.

Maybe next time, I will try to create the Blue galaxies again. I have seen pictures of the blue galaxy guppies in Japan. I know that this strain can be created but I also know that it will take some time and careful systemic breeding processes to achieve something like this.

If any guppy breeder out there have created a blue galaxy, I would like to buy some fishes from you.

Do contact me at guppyblog [att] gmail [dot] com.

Happy guppy breeding!


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  • perfect 🙂

  • Derrick77

    You are right that jap blues are very dominant in the male. I also did a cross to my Tanaka Jap plat. yellow round tail and I got 1/2 jap blue and 1/2 plat yellow tail! Looks bad and I culled the whole batch. I was expecting that the platinum would be dominant over the Jap blue but we found our answers through our breeding!

  • Ishykiel

    Hi Derrick,
    The Jap Blue gene is persistent and will appear even in later batches of fries. My Galaxies however for some lines did manage to breed true for 1 or 2 generations after which the peculiar Jap blue male will appear the following batch. I kind of like the Jap blues that appear though and they breed true too if you decide to do so. The gene being dominant will ensure that there will be no Galaxies appearing in a Jap blue male inbred with another Jap blue female.

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