Freshwater biology

Dead fish lie on the shores of Koroneia Lake in northern Greece, on Thursday, Sept. 19, 2019. Tens of thousands of dead fish are washing up as the water level has plummeted to less than a meter deep (three feet) and the lack of oxygen in the water is leading to mass mortality of everything in it. (AP Photo/Giannis Papanikos)
September 19, 2019 - 12:54 pm
KORONEIA, Greece (AP) — Tens of thousands of dead fish have been found on the banks of a lake in a protected nature reserve in northern Greece after high temperatures and drought conditions caused a severe drop in water levels. State environmental officials said Thursday that the water level at...
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FILE - In this June 13, 2012, file photo, Asian carp, jolted by an electric current from a research boat, jump from the Illinois River near Havana, Ill. A newly released study says if Asian carp reach Lake Michigan, they probably would find enough food to spread far and wide. Some experts have questioned whether there’s enough plankton in the lake to sustain the invasive carp away from shoreline areas. But the new report released Monday, Aug. 12, 2019, by University of Michigan scientists says despite a drop-off of plankton caused by exotic mussels, the voracious carp could feed on other organic material when venturing into deeper waters. (AP Photo/John Flesher, File)
August 12, 2019 - 2:42 pm
TRAVERSE CITY, Mich. (AP) — Asian carp are likely to find enough food to spread farther if they establish breeding populations in Lake Michigan, reinforcing the importance of preventing the invasive fish from gaining a foothold, scientists said in a paper released Monday. A study led by University...
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In this Monday Aug. 6, 2018 photo, dead fish are shown near a boat ramp in Bradenton Beach, Fla. From Naples in Southwest Florida, about 135 miles north, beach communities along the Gulf coast have been plagued with red tide. Normally crystal clear water is murky, and the smell of dead fish permeates the air (AP Photo/Chris O'Meara)
August 10, 2018 - 4:10 pm
LONGBOAT KEY, Fla. (AP) — Tons of dead fish. A smell so awful you gag with one inhale. Empty beaches, empty roads, empty restaurants. A toxic algae bloom has overrun Florida's southern Gulf Coast this summer, devastating sea life and driving people from the water. "I've never seen it this bad,"...
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