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Thread: Mosquito Fish.... Pics and questions!

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    Administrator brewmaster15's Avatar
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    Default Mosquito Fish.... Pics and questions!

    Hi all,

    Several months ago I got the crazy idea to breed mosquito fish, and also try and cross them to guppies (not easy or likely from what I read!)... I got them from Drs.Foster Smith and was pretty impressed with the process and packing. The fish were in good shape and set them up with what I thought would be a good tank for them. 20 Long, some driftwood, spawning grass( plastic) and Live pothos.. rooted into the water. They did great and I don't think I lost one of the 20 I got... in the mix are 4 males, and 16 females. A decent ratio for breeding. Temp at about 73 F and tap water. I have yet to see any fry though, swollen bellies, but zippo on the fry.. I'm thinking they are just eating the fry. I had wanted to breed these and add some to my patio container waterfall and a 125 gal frog pond I have. I know if I throw them in it they will probably breed on their own but I wanted to have a hand in it.

    IMGP3123

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    Anyone here breed these in a tank before? I figured they'd be like guppies but I find them much more aggressive and challenging..but an interesting fish.

    al
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    Administrator brewmaster15's Avatar
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    Default Re: Mosquito Fish.... Pics and questions!

    Heres the tank itself...
    2018-05-10 12.16.13.jpg
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    Gold Member Adam S's Avatar
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    Default Re: Mosquito Fish.... Pics and questions!

    I used to keep a colony of the melanistic strain in the yard, but decided I'd rather not have to take care of them during the summer months. I think it's impossible to kill the things by means of temperature.

    Try cranking the heat up to 80-84F and toss in a pile of garland or yarn. Gambusia males are extremely "active," so you can be almost positive the females are dropping.

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    Default Re: Mosquito Fish.... Pics and questions!

    Yarn? Now theres an idea I hadn't thought of. Thanks Adam, I will give it a try.

    al
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    Registered Member smsimcik's Avatar
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    Default Re: Mosquito Fish.... Pics and questions!

    Hi Al,
    I tried crossing Gambusia with guppies a few years ago. I thought I would get robust fry with a lot of hybrid vigor. Instead, the fry were weak and frail. A few made it to adulthood but I never got any offspring from them. I later read that mosquito fish and guppy hybrids are usually sterile. Moral of the story, it's probably a waste of time trying to cross breed them.

    Adam is correct, you need lots of dense cover for the fry to survive being eaten.
    Last edited by smsimcik; 05-11-2018 at 09:03 AM.

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    Default Re: Mosquito Fish.... Pics and questions!

    Quote Originally Posted by smsimcik View Post
    Hi Al,
    I tried crossing Gambusia with guppies a few years ago. I thought I would get robust fry with a lot of hybrid vigor. Instead, the fry were weak and frail. A few made it to adulthood but I never got any offspring from them. I later read that mosquito fish and guppy hybrids are usually sterile. Moral of the story, it's probably a waste of time trying to cross breed them.

    Adam is correct, you need lots of dense cover for the fry to survive being eaten.
    Thanks Steve,
    Yep I read that too and thought as you did about the robust fry I may get. Its probably a waste to try. I did try with some endlers I got from Adam.They have been prolific so I took a group of 3 extra male endlers and added them to a tank of 6 female Gambusia.The endlers chased them around but then I noticed the females chasing the males.... the males soon disappeared.

    Im thinking the only way to succeed with enders would be 1 female Gambusia plus 4-5 endler males and then remove the males before the female is too harrassed.

    ah well..maybe after I get Gambusia fry.and have virgin females to cross out.

    al
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    Default Re: Mosquito Fish.... Pics and questions!

    Quote Originally Posted by brewmaster15 View Post
    The endlers chased them around but then I noticed the females chasing the males.... the males soon disappeared.
    Well.... they shouldn't start something they can't finish.

    When crossing swords/platys/variatus, you usually use the youngest females of the bigger species. Sounds like you're on the right track.

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