Fig. 1

copyright Leibniz Institute of Aging, Fritz Lipmann Institute, with permission. b Example of an African pan in Mozambique during the Monsoon season, when Nothobranchius fishes are collected, and c the same African pan totally dried up, few month later, during the dry season (modified from [1] under CC 4.0) d Example of Nothobranchius furzeri eggs stored on peat moss. (Photo Nadine Grimm. Copyright Leibniz Institute of Aging, Fritz Lipmann Institute, with permission) e Young adult couple of Nothobranchius furzeri, sexually mature: the strong sexual dimorphism is apparent, with the intensely colored male and the dull female, in which a round abdomen indicates the presence of eggs. Photo Nadine Grimm. Copyright Leibniz Institute of Aging, Fritz Lipmann Institute, with permission. f, g Comparison between young and old phenotype: a young healthy, brightly colored male is shown in (f), in contrast to an old subject in (g), characterized by several features of the senescent phenotype, such as loss of colors, spinal curvature, body emaciation, and frayed fins. Photo Nadine Grimm. Copyright Leibniz Institute of Aging, Fritz Lipmann Institute, with permission