sexing guppies

[fishwatcher]

How do you tell the difference bt a male and female guppy (if they both are rather small and the tails are both fairly long)?
I have 3, and I know one is female (she's great-big pregnant) and the other two?

 

[bluefire]

the males anal fin is shaped like a tube caled a gondopendium(sp?)

 

[xanthianacid]

Also fully grown males are smaller than fully grown females, the males are usually far more colourful, but not a hard and fast rule. They also have a bigger tail fin on the females, while males tend to be longer. But the gonapodium is the biggest teller of course.

 

[Tokis-Phoenix]

pretty much all livebearers have the same sexual organs, check this link out for pics;

http/fish.orbust.net/livebearers.html

 

[fishwatcher]

Thanks! Got it, now! They are the opposite of what the man told me they were, which is kind of what I thought. Once again, this site outdoes the lfs!

 

[LoachLover]

The males anal fin is shaped like a tube.

 

[bunjiweb]

the males anal fin is shaped like a tube caled a gondopendium(sp?)

The males anal fin is shaped like a tube.

Forgive me for thinking Loachlover that your post was a complete waste of time when this had already been covered in the post, AND your post had exactly the same wording.....

Just to add, when the Guppies are young you can only use tube/fin to tell the difference in sex. It is only at around 6-8weeks that you can properly tell just by body colouration...

Ben

 

[fishwatcher]

Thanks to ALL of you for helping me out in this.

 

[Torrean]

from time to time the guppy will point his gonopodium straight down. This is when you can really tell that it is different from the female. When the males fin is pulled up against the body you can't see it very well. The females anal fin is fan shaped like her tail.

(this is probably evident in the link given earlier but I figured i'd type it out for those to lazy to look.)