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Can Mosquito Fish crossbreed with Guppies?


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#1 Andrew Beard

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Posted 02 December 2004 - 10:52 PM

I have a red Guppy male with three wild Mosquito females and im curious to know if it is possible for them to breed. I also wanted to know if Mollies really can breed with Guppies. A response would be great! :blink: [COLOR=blue][FONT=Arial]

#2 NickT

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Posted 03 December 2004 - 12:03 AM

a mollie guppie cross is somthing that can happen.
however im not shure about the mosquito fish..... do teh male guppies display for the mosquito fish (sicking the dorsal strait up and shaking his flaird tail while bending into an S shape)
if hes displaying for them maybe he can cross with them but i am compleatly unfamiliar with themosqueto fish.

#3 Opcn

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Posted 03 December 2004 - 07:10 PM

Mooly guppy crosses have major health problems FYI,

A mosquitoe guppy cross would be great and could bring you alot of money especially if you used some of the norther varieties of gambusa, Personnaly I'd force mate (fish rape) them to get past the barrors in the first generation then breed them on a few generations and test for cold hardyness next winter. then take the cold hardy ones and breed for color. Good luck

#4 sylvia

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Posted 03 December 2004 - 07:36 PM

They can't cross-breed - guppies are poecillia sp. whilst mosquito fish are heterandria sp. The fry would probably not even develop if you managed to artificialy impregnate a female and they deffinately wouldn't survive. Guppies and mollies can cross-breed and I think there is a picture of a golly/muppy lurking in a thread somewhere around here...

Also, male guppies will display and try to mate with anything in the absense of females - this includes other species, whether compatible or not, and other males. As such, displaying or attempting to breed is not necessarily an indication of their ability to produce viable fry. :)

Mooly guppy crosses have major health problems FYI,

A mosquitoe guppy cross would be great


What makes you think that crossing a guppy and mosquito fish would be great if a guppy/molly cross results in unhealthy offspring? Assuming it were possible I doubt the offspring would have any fewer birth defects than the muppy/golly hybrids.

BTW, not all guppy/molly crosses have problems. I have raised several such fry myself.

#5 sylvia

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Posted 03 December 2004 - 07:39 PM

Here's the link to the thread conatining the muppy/golly picture:

http://www.fishforum...showtopic=66145

#6 Opcn

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Posted 03 December 2004 - 08:17 PM

I was told on a live bearer forum (Not this one) that gambusa were closely related to guupies, and it would be very cool because mosquitoe fish lack color completely and infuseing them with color would make them more popular and there would be fewer mosquitoes and thats a good thing.

#7 GuppyDude

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Posted 08 December 2004 - 12:46 AM

masquito fish and guppys can cross but mollys and guppys can not, im almost positive on this. :D

#8 Shark_Lover

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Posted 08 December 2004 - 02:09 AM

never know! could happen!!

#9 sylvia

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Posted 08 December 2004 - 08:11 PM

masquito fish and guppys can cross but mollys and guppys can not, im almost positive on this


Did you see the thread I posted a link to?

I'm positive they can breed cause mine have (guppy x molly).

I could be wrong about the mosquito fish crossing with guppies though but I've never tried it. It just sounds unlikely because they aren't as closely related as mollies are with guppies and most fish can't naturaly inter-breed unless they are in the same genus (take gouramies for example... ever seen a honey x pearl cross?).

#10 bshockstubb

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Posted 08 December 2004 - 11:03 PM

I agree with guppydude....did a little reserch and that guppy hybrifd you say is really just a picture of a molly in the state of hawaii.(illegal transportation)

My dad has breed mosquito fish and feeder guppies about 35 years ago in his backyard in LA. They look like mosquito fish exept they ahve redish-green sides. Thats just about it....

#11 bshockstubb

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Posted 08 December 2004 - 11:04 PM

Also FANCY guppies arent as closly related to mesquito fish and as feeder guppies are.

#12 GuppyDude

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Posted 08 December 2004 - 11:17 PM

if u can provide me pics of these molly guppy hybrids, sure ill beleive you but i dont see it happening, their 2 totally differant fish -_-

#13 sylvia

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Posted 09 December 2004 - 12:04 AM

I don't have pictures - they're all long dead but the fish are very closely related. I'll try to find some pics on the web...

#14 Opcn

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Posted 09 December 2004 - 12:33 AM

Guppy Molly Hybrids first arose in the 80's but were soon abandoned because of rampant health problems.

Feeder guppies and fancy guppies and wild guppies and Endlers are all the same species, however they are different populations, The genetic difference is negligable for hybridisation purposes.

Genuses are man made and have no bearing on hybridisation, as a general rule individuals of two seperate species will not interbreed Genus is useually a good indicator of genetic difference but not always.

#15 GuppyDude

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Posted 09 December 2004 - 04:09 AM

that is interesting information, id like to know what kind of health problems arose in these hybrids, -_-

#16 Opcn

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Posted 09 December 2004 - 08:18 AM

All sorts of problems can arise from nutrient deficiency to Nervouse system imbalances to malformed skelital systems to heart problems. Hybrids sometimes face more problems than there parents

#17 sylvia

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Posted 09 December 2004 - 06:41 PM

I'd just like to point out that whether endlers and guppies are the same species is debatable. They occured in the same area in the wild but did not inter-breed. they were never assigned a species name but, if I remember correctly, that had to do with the person who was going to name them dying before he did so or something like that - and no-one did anything about it afterwards.

Genus, it is true, doesn't necessarily determine whether fish can inter-breed but most species are placed in the same genus if they are closely related. That is, after all, the whole point of classification - to show the relationship between different species and also seperate them and destinguish between them. As such, most fish placed in the same genus are closely related and many can inter-breed. Examples are many cichlids, gouramies in the genus colisa (dwarfs with honeys) and trichogaster (pearls with three-spots) and livebearers (guppies with mollies or endlers and, less confusingly, swordtails with platies). Just wanted to make this clear.

#18 Sanj

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Posted 09 December 2004 - 09:01 PM

Feeder guppies and fancy guppies and wild guppies and Endlers are all the same species


That isnt necesarily true, Endlers have not been classified yet, the jury is still out. It is likely they are an isolated population of guppy which has diverged quite a bit.

Prof. John Endler considers them seperate and f1 hybrids are usually sterile.

#19 ferrikins

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Posted 09 December 2004 - 10:57 PM

I going to attemt to breed my Metallic Live-bearer (Girardinus Metallicus) With guppies.

It will be a male guppy and female metallic, the female where born last months, the male was balt last tuesday.

will let you know what happens.

#20 guppymonkey

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Posted 16 December 2004 - 02:06 AM

Genuses are man made and have no bearing on hybridisation, as a general rule individuals of two seperate species will not interbreed Genus is useually a good indicator of genetic difference but not always.

What? Some of what you say almost makes sense but not really. Yes genus are man made but they are man made definitions of the families and relationships between species. Sometimes these are wrong but they are usually right.

No species can breed outside its genus. It doesn't happen. If the guppy (Poecilia reticulata) tried to breed with the mosquito fish (Gambusia affinis or Gambusia holbrooki) nothing would happen. It would be like a dog trying to breed with a fox. Or a pigeon trying to breed with a cockatiel. They could hump to their hearts content but nothing would happen.




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