Colour abnormalities in native amphibians in Flanders This is an overview of various colour abnormalities seen in native amphibians in the Flemish part of Belgium. The most common forms of colour abnormality, such as albinism, leucism, cyanism and erythism are explained and illustrated with examples. The most important observations, found in the Common Frog (Rana temporaria), Common Toad (Bufo bufo), Edible Frog (Pelophylax kl. esculentus), Fire Salamander (Salamandra salamandra), Alpine Newt (Ichthyosaura alpestris) and Smooth Newt (Lissotriton vulgaris), are described. There may be other cases of colour abnormalities in amphibians that have been seen in Flanders but not yet known to the authors. The authors would be glad to receive note of any such observation: send the name of the species, its gender, the exact location and date on which the animal was seen, preferably with a photo to the Belgian address below.