Guppies Fancy Strains and How to Produce Them is an incredible book for aquarium fish breeding strategies. This book was referenced by Stan Schubel, founding Master Breeder of the IFGA, in his book The Proper Care of Guppies. Beautiful photos, detailed genetic records. Much better than information on the internet and much easier than scrolling through forums. I looked for this book for months then found 2 copies. Offering one here. Applies to fish breeding generally.