Characterization of the reproductive strategy of invasive round goby (Neogobius melanostomus) in the Upper Danube River

Originating from the Black and Caspian Seas, the round goby (Neogobius
melanostomus) has become one of the most successful invaders of freshwater
ecosystems. This dataset was created to provide a characterization of the
reproductive strategy of an established round goby population in the Upper
Danube River including sex ratio, fluctuations of gonadosomatic index
(GSI), analysis of timing of spawning as well as of clutch and egg size.
Data was collected for 1.5 years and time-series analysis was used to
examine the influence of temperature, photoperiod and discharge on the
reproductive strategy of round gobies. Further, clutch and egg sizes of
round gobies as well as sex ratio of the population was analyzed.