This is a review of the new CAS library book Corydoras: The most popular armoured catfishes of South America, by Werner Seuβ (1993). This book was purchased for the CAS library with financing from a special auction of Corydoras catfishes donated by CAS members Birgit McKinnon and Gernot Kostera. Dr. Seuβ (pronounced soos: don’t laugh) is an avid aquarist, and he has raised almost the entire Corydoras species flock in his own home in Sparneck, Germany. Since the publication of this book he has also had a fish named after him; Corydoras seussi. Too bad that this fish was described too late to be included. This is a fabulous book. All 128 Corydoras species known in 1993 are in the book; and all of them are presented with description, a location map, and a pen-and-ink drawing; and almost all of them with a color photograph as well. And the photography is the best I have ever seen in any publication other than National Geographic. Each picture shows the fish clearly and with exquisite sharpness in a beautifully planted tank. Not a blemish or any hint of grain is found is any of the photographs. Yet each photo has soft natural light that does not reveal any clue as to what lighting was used. It is however obvious that the subjects were at least partially fore-lit as the reflective iridescence of the scales is clearly seen. No better photographs of aquarium fish will ever be published (the photograph of the two Corydoras "C5" is particularly wonderf ...

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