Guppy Designer has been publishing catalogs of guppy strains for twelve years now, beginning with 40 strains. The present publication is the largest yet with over 150 strains illustrated with high quality photography and detailed information. The information is cross-referenced to the Guppy Color Manual.
The increasing accuracy of the catalog in terms of its description of the strains and their genetics reflects the author's own creation of many of the strains through crossings. The catalog covers strains from across the globe, from Canada to Thailand, from the U.S. to Italy. In many cases the history of the strains have been given, their description, their genetics. There are many expert breeders tips and observations.
The strains catalog is a handy desktop reference when you are trying to figure out the genetics of a strain seen in your tanks or online. It is also a guppy designer's guide since crosses between strains are represented, as well as the variations of established strains, like Metal Pingus or new strains like the Blond See-thrus. If you are wondering what a cross to a magenta guppy will do to the appearance of your strain, very likely a picture and description of the cross can be found in the book. There is simply no other book in the hobby so thorough and so accurate in its presentation of the major strains that the guppy's mutations have produced.
Recommended is the companion book The Theory and Practice of Guppy Breeding which will make the detailed genetics descriptions in the Strains book easier to understand. The Theory and Practice book also contains a reference chapter on the major color and pattern mutations of the guppy, useful in understanding how I have classified the strains and described the mutations they embody.