Abnormal appearance of the second pair of ventral fins in bleak Alburnus alburnus (Fam. Cyprinidae) of the Saratov Reservoir middle part


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Abstract

A specimen of late larva of bleak Alburnus alburnus with an additional pair of ventral fins sampled at the middle part of the Saratov Reservoir is described. This type of abnormality was revealed in the Saratov Reservoir for the first time.

About the authors

A. K. Mineev

Institute of Ecology of the Volga River Basin

Author for correspondence.
Email: mineev7676@mail.ru
Russian Federation, Tolyatti, 445003

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