Obviously, since they are fish they will swim but Guppies (Lebistes reticularis) are Freshwater Fish and will die shortly after being placed in saltwater.
Guppies are freshwater fish: Sea horses are saltwater fish
They swim.
Yes, guppies do swim, but only if you put them in water.
with its tail
Yes.
Guppies can sense a rapid change of conditions in their environment and will normally respond by swimming in a hyper speed.
they usualy swim fast in both waters.
Some of them will get eaten, but what you can do to help is to have a plant that is small enough for the baby guppies to swim through. It will protect them when they are that young.
Yes.
The guppy is a fresh water fish.
opline gourami, guppies ,hatchet fish
Yes, I've found that if I turn off all the lights and make everything really quiet for about 20 minutes my guppies start to sleep in a school. They all stick together and swim around the tank its really cute.