My 29 Us Gallon

[Biulu]

Ok, thanks! I thought that these were 1 species, just 2 bred varieties.

 

[Carlovel1]

How about the OP looks into Swordtails or Platys, they are available in more colours and also freshwater

 

[KittyKat]

Ok, thanks! I thought that these were 1 species, just 2 bred varieties.

There are more than 2 species, but those two are by far the most common ones you will encounter in a standard LFS.