Abstract:Abstract. T he p ap e r gives an acco u n t on th e d istrib u tio n an d m orphological ch aracteristics of Nem achilus barbatulus (L.) in th e riv er basins of T anew , W ieprz an d B ug w ith reg ard to h a b ita tio n a l conditions. Śliz jest gatunkiem bardzo interesującym z kilku powodów. Przede wszyst kim jego forma nominatywna zajmuje rozległy teren, a jednocześnie wykazuje znaczną stałość pod względem morfologicznym ( B e
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