You should not. If you do, your guppy or molly will end up dying.
Guppy
Well, Adult Guppy's Can't Eat Other Adult Guppy's. If The Guppy's Breed Then They Won't Eat Any Of The Guppy Baby's. They Will All Work Together To Take Care Of The Baby's. But If They Breed And You Add Another Guppy/Fish Then It May Eat The Baby's.
Molly, Guppy and Swordtail.
No, they are different species of fish
what do you think? eat, swim, poo and breed.
Yes, you must have a male and female to breed.
Here are some examples for freshwater fish: Cutthroat Roanoke Smallmouth
if you're trying to breed them, don't worry. he'll catch her
Guppies don't really "like" other guppies. They are pretty stupid animals offense to you guppy lovers. All they do is breed.
Adult. Most guppies are fully grown at a year old.
if the belly is still black it means the guppy still has some babies in there. the black Dot is the embryo.
No, If you want them to live together go ahead! Shrimps get along with small fishes and a guppy is pretty small, Shrimps live in 45cm tanks and so do guppies!