Huge amounts of dead fish have been found in a reservoir in Poland near the Oder River, where wildlife was devastated by toxic algae in the summer of 2022. More than 14.5 tons of fish was recovered in recent days in the Dzierzno Duże reservoir, which branches off from the Gliwice Canal connecting to the river, Marek Wójcik, head of the Silesian regional administration, said on Friday. Laboratory tests by environmental authorities had found a high concentration of golden algae in water samples from the reservoir, the official said. Barriers had been installed in a connection between the reservo…