I believe that female guppies can store male sperm in their bodies until the environment is just right and then they will use it to become pregnant at will.
All that is needed is a male guppy in with her.
Depending how old it is, if it is an adult female and it is in with male guppies then it is very likely that it is pregnant. (:
No, unless a) the female fish got pregnant before the male died, or b) you buy a new male guppy and put him in with the female.
it may be a femake or a FAT guppy
The Gravid female will have the dark "gravid spot" in front of her vent. I can however assure you that if there has been a male in the same tank with a female guppy for any reasonable length of time she will be gravid.
Well, since the females could be pregnant when you buy them, all male would be better.
It might want to mate with it.
Under normal circumstances every female guppy you come across will be gravid (pregnant). My advice is don't worry about it she will be pregnant.
Your male guppy is female and with child.
If your female guppy has been in a tank/container with a male since it reached maturity it will be gravid (pregnant). Give it time. The fry will come eventually
yes there are. that is how they get mates.
If the fish has a "GONOPODIUM" it is definitely a male.