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I have read through several other similar threads, but i sill can't seem to distinguish male from female

I don't see a gavid spot on any of the fry.
I can't see a difference in the fins.
Their difference in size is minimal.
There are no color differences.

There is only 1 that is obviously bigger than the rest so I tagged it as female.

There are 12 fry and they are now 40 days old, all are greyish in color. Other people said that by now they should start to color and be "sexually" mature! but i still don't see the color.

I don't mind the color as it will come later on, but the sexually mature is what gets to me! if they in-breed there's a high chance the fry will have abnormalities! I don't want this to happen!

Oh I have another younger fry batch, around 1 week old, and there are around 8 of 48 that are darker. What does this mean?

So do any of you know any other way to find out?
Plus is the sexually mature thing true?
Could the female fry be already "seeded"?

2007-05-29 13:48:51 · 7 answers · asked by dy 1 in Pets Fish

I can't tell a difference in the fins mostly because they are so transparent i can't see them.

This is my first batch so I am totally clueless.

2007-05-29 13:50:35 · update #1

7 answers

It's a bit early yet to be able to tell the males from females, but you are coming up on the time the males will begin to develop their gonopodiums. Expect that to begin by 2 months to 10 weeks. That process will take at least a week to complete externally and some additional time for everything to develop enough to be completely functional. That will give you a bit of time to separate them from the females. If you use a fairly string flashlight you can often see the change to the males anal fin beginning easier and a little earlier than without the light.

You are right to ignore fin differences and color differences at this point. Those will show up a little later.

In todays fancy guppies inbreeding or line breeding is the norm and doesn't result in any additional abnormalities than out breeding will have in a typical batch of fry. Guppies are very prone to genetic mutation and some studies have suggested that they are the top species of vertebrates when it come to mutations. One study showed a 6% mutation rate in a single generation. Considering that there is only a 3% difference between human and chimp DNA you can see how radical that is in a species.

So don't be concerned for the fry if by chance some of your females do get "hit" before you get them separated, not real harm will come of it at all. So far it's impossible for the females to be "seeded" and won't be possible until after the males mature.

MM

2007-05-31 02:01:02 · answer #1 · answered by magicman116 7 · 0 0

There's no real why to spot him until his sexual organ starts to develop, in breeding is a problem within the industry however, you should not have a problem with first generation, or second and by this time you can start either crossing back a generation or bringing in fresh males or females with the particular colour you want to have.

AJ

2007-05-29 13:55:34 · answer #2 · answered by andyjh_uk 6 · 0 0

They aren't mature that early. The adult female has no color other than maybe a dirty biege. The adult males have longer and brightly colored tales. Just wait til you start to see color and those are the males. Don't worry about the inbreeding it goes on all the time with no detriment but if you can separate thats good. You have plenty of time. They are prolific thats for sure!

2007-05-29 14:00:15 · answer #3 · answered by Gail G 2 · 0 1

a million)men have long tails & a skinny physique 2)women get their abdomen enlarged 3)in case you have in straight forward terms guppies in the tank, no might desire to do something. yet whilst there is the different fish, do away with the two. 4)it truly is elementary the have spots close to the tails of guppies.

2016-10-09 02:32:09 · answer #4 · answered by Anonymous · 0 0

Keep waiting. If they still are babies that don't resemble fish yet then they're too young to tell what they are by us "normal folk" and not experts. Just be patient. Fish inbreed all the time and have no real blatent birth defects. Usually the defected ones get eaten leaving the normal ones to breed.

Relax Dad, it'll happen.

2007-05-29 13:53:12 · answer #5 · answered by Anonymous · 0 0

You can't really tell until the fish are fully grown adults.

2007-05-29 13:58:50 · answer #6 · answered by Tunish305 3 · 0 1

Its impossible until they grow a bit bigger..plz wait :-)

2007-05-29 20:34:50 · answer #7 · answered by Anonymous · 0 0

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