Popular Aquarium Fish Has Been Thriving in Ukraine’s Polluted Sewers for Decades
A sizeable population of tropical fish native to Venezuela and Guyana has been thriving in the polluted sewer system of Kyiv, in Ukraine, since the 1980s. The ability of guppies (Poecilia reticulata) to adapt to various environments is well documented, but few people would expect to find a full-blown colony of the popular aquarium fish […]