Аннотация:Lantz's newt, or the Caucasian smooth newt (Lissotriton lantzi), is endemic to the forest belt in the Caucasus. Descriptions of the first cases of leucism and melanism in this newt species observed in captivity are given. All leucist larvae (18 specimens) were found in the offspring of a single female, and all died before metamorphosis. The melanistic newt is a paedomorphic specimen that still lasts for two years. Based on the study of more than 6.000 lab-grown larvae of L. lantzi, the authors note that leucism and melanism are very rare in this species.