Faunistic revision of alien fish species in the Black Sea

According to original and published data for the period from 1998 to 2013, the findings of 25 alien marine species of fish in the Black Sea were reliably established, 16 of which were recorded for the first time, and nine species which were previously known as solitary specimens were detected in new areas of the coastal zone of the sea. The largest number of new species (21) was recorded near the Black Sea coast of Crimea. The naturalization of 13 species is suggested; six species are assigned to the group of facultative, occasionally occurring fish and six species are considered as random species. The main vectors of introduction and causes of a significant increase in cases of registration of allochthonous fish for a 15-year period are considered. © 2014, Pleiades Publishing, Ltd.