Those guppys look like strains/crossbreeds of medusa galaxy and japanese blue grass guppys- the unsual tailed ones are japanese double swords- heh tokis the guppy-type index to the rescue

!
All 3 of these strains are very fragile and very pricey(usually about $30-40 for a trio), not suitable beginner guppy strains to own.
Jeeze... Thanks Tokis!
Could you check your cranial index and see if it knows what strains would look comparable, but more hardy and less expencive?? I like the light blues and yellows.
The fact that they are japanese makes a TON of sence now. That is an Amano photograph.
There are many other types of patterning and coloring in guppys that are just as beautiful or even more so, the main tail pattern types are;
1) Solid Tail
This type has a solid color tail such as red, yellow, green, purple, black etc. It¡¯s considered superior when the color is clear and does not contain different color shades.
2) Grass
This is a variation of a Mosaic pattern and has small dots all over on the tail making it appear as if grass seeds were on it. Strains such, as Blue Grass is one of the very popular strains along with the German Yellowtail Tuxedo, and RREA Neon Tuxedo.
3) Mosaic
It has bigger dots that are inter-connected. Mosaic strains have been developed for a long time and are common but often superior than most strains. Mosaic is not very popular in Korea, but a strain such as Blue Mosaic is very beautiful and is used to improve other strains.
4) Cobra/Leopard
This type has dots that are much bigger compared to Grass type. Strains such as Leopard Tuxedo are very beautiful, but are considered difficult to stabilize the pattern over generations.
Mosaic and cobra guppy strains have been around alot longer than grass strains and are generally cheaper and much more hardy- because alot of people don't actually know much on the various prices for guppy colors its not too difficult at all to pick up a good mosaic or cobra guppy for a pound or 2.
The more pedigree a guppy is the more inbred it tends to be and the more inbred it is the less hardy it is. Breeders try to breed longer and longer tails and more unusual colors via inbreeding, an easy way to tell how inbred a guppy is, is via the length of its tail, so shorter the tail is the less intensive breeding it has been under etc.
Same sort of thing goes for colors and size, inbred male guppys tend to be very small and curvy for example, and female guppys don't naturally have much color in them so ones that are like purple and red dots are probably reasonably inbred- alot of this is trial and error though.
Before you get set on grass type guppys check out some of the other beautiful strains available;
leopard/cobra type guppy(i actually have the same type of male amoungst my own guppys);
http
/guppymania.acvariu.ro/pics/galerie_.../leopard_m1.jpg
cobra cross male;
http
/sgguppy.com/cpg/displayimage.php?al...&cat=1&pos=-254
emerald green;
http
/sgguppy.com/cpg/displayimage.php?al...tup&cat=1&pos=0
red/black tuexdo male;
http
/www.aquabid.com/cgi-bin/auction/auc...pies&1132934571
There are thousands of types of coloration and patterning available in guppys, these are just a few i selected, look around your lfs's and see what they have on offer.