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This study describes the length‐weight relationship of pure diploid individuals of Cobitis elongatoides from the Nová Říše Reservoir, Czech Republic. The resultant length‐weight relationship was highly dependent on the individuals included, thus the length‐weight relationship of males, small females and large females differed significantly. Furthermore, these relationships varied between sampling...
Accurate identification of invaders, and especially their juveniles and eggs, is a difficult task if several morphologically similar species co‐occur. The aim of the study was to develop and test a rapid and cost‐effective procedure for identification of five species of invasive gobies occurring in the middle Danube basin, namely round goby Neogobius melanostomus, bighead goby Ponticola kessleri,...
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