Invasive alien fishes have detrimental ecological effects on aquatic ecosystems and the services they provide. Impacts from an invasion in a single ecosystem may differ across space time due to variability prey availability environmental conditions. We hypothesize that such can be profound, even within ecosystem. Stable isotopes analysis (SIA) is commonly used quantitatively describe trophic ni...

The present study catalogues exotic and allochthonous fish species found in the three main freshwater river drainages of Rio Grande do Sul State using records scientific collections literature, discusses impacts caused by their introduction natural environments. Ten are area, i.e., Clarias gariepinus, Coptodon rendalli, Ctenopharyngodon idella, Cyprinus carpio, Hypophthalmichthys molitrix, nobi...