the Giant Green Delta
These are a very large elegant guppy that can have amassing green color sometimes :)
One of their great uses are for crossing into other strains to increase size,fertility  and depth of color
Please know that green guppies both Moscow and delta strains vary in their color depending on lighting,background and water conditions.  In one of my tanks they are green  in the other they are a beautiful amassing blue
pictured at just 5 months old
they will get the most amaising finnage when mature