Yes, chances are most guppies in your country are related distantly.
They can be in a community of other tropical fish of the same size.
It might want to mate with it.
In all probability at least one of them is trying to mate.
No.
Nope, that can not happen.
He wants to mate with the female. That is a guppy's normal mating behavior.
You mean, how do they reproduce? They mate. And they don't lay eggs, they're livebearers.
That does not happen with guppies. They stay the same sex for life.
No, a guppy is a livebearing fish, and a goldfish is egg laying.
By having both males and females in the same tank. They are both live bearers and will mate with each other.. But beware the babies grow up to be really ugly!
Guppies can mate in a community tank of tropical fish around their size. Be sure to add lots of live plants!
The guppy was "Lebistes reticulatus" for many many years but now the taxonomists in their ultimate wisdom, have decided that the guppy should be in the same classification as the Molly. Now the Guppy is correctly called "Poecilia reticulata".