Kırankaya, Şerife GülsünEkmekçi, F. Güler2023-07-262023-07-2620212687-475Xhttp://doi.org/10.15671/hjbc.961220https://search.trdizin.gov.tr/yayin/detay/483874https://hdl.handle.net/20.500.12684/13411Livebearer poeciliids, with few exceptions, are among the most popular and highly traded ornamental fish species. There- fore, they are frequently introduced to natural waters outside their native range mostly by aquarium hobbyists. Here we report feral populations of two exotic poeciliid species, the green swordtail ( Xiphophorus hellerii) and the guppy (Poecilia reticulata), established in a hot spring in the Eastern Turkey (38°34? 32??N, 37°29?21??E). This is the first documented record of swordtail in Turkey and possibly the first records of the two species in the wider Euphrates Basin. More research is nee - ded to address the potential impacts of these two poeciliids on the native biota, and also their further spread chance and management options.en10.15671/hjbc.961220info:eu-repo/semantics/openAccessArticle494433441483874