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Freshwater fish have been either killed or found in severe distress following the high tides and strong winds which gripped Kent this week.
Environment Agency officers were sent to a section of the Gravesend riverside promenade next to the Fort Gardens, which is largely submerged under water.
They confirmed reports of freshwater fish having been killed following the excess rainfall.
A statement from the Environment Agency said: "Our officers have investigated the matter and believe these freshwater fish were killed when saltwater spilled over the top of the defences into their pond, as a result of the high tide and strong winds."
Freshwater fish cannot survive in saltwater and were recovered from the scene.
A flood warning was put in place for Gravesend following high tides which fell between 2am and 2.30am yesterday morning.
The riverside near the Promenade as well as the Clarendon Royal hotel gardens were some of the worst hit places in the borough.
A flood alert, which is less severe than a warning, has been put in place this afternoon for low lying land and areas nearest the coast from Dartford to Allhallows on the Isle of Grain.
The government's flood information service has advised people in these areas to be careful when walking across beaches, promenades, coastal footpaths and roads during these times.
Higher than normal tides are expected to continue over the next two days.
Escaped animals, unusual finds and news from the RSPCA can all be found here.