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23 lut 2021 · In 2020 alone, 16 freshwater fish species were declared extinct. Since 1970, mega-fish—those that weigh over 66lbs—have declined in number by 94% and migratory freshwater fish saw a 76 % decline. Nowhere is the world’s biodiversity crisis more acute than in freshwater ecosystems.
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23 lut 2021 · Freshwater fish make up 51% of all fish species and ¼ of all vertebrate species on Earth; Nearly 1/3 of freshwater fish species are threatened with extinction; 76% decline in migratory freshwater fish since 1970; 94% decline in mega-fish (heavier than 30kg) such as Danube sturgeon since 1970;
larger species – the so-called ‘megafish’ – have crashed by a staggering 94 per cent. Nearly a third of all freshwater fish species are threatened by extinction – and for 80 extinct species it’s already too late. There’s no mystery about why freshwater fish numbers are falling so precipitously: habitat degradation, poorly planned
4 mar 2021 · The IUCN Red List of Threatened Species has declared 80 to be extinct, 16 of those in 2020 alone. The numbers of migratory freshwater fish such as salmon have declined 76 percent since 1970, while mega-fish such as beluga sturgeon have fallen by 94 percent in the same time period.
22 lut 2021 · Freshwater fish continues to be undervalued and overlooked – and thousands of species are heading towards extinction. Populations of migratory freshwater fish have fallen by 76 per cent since 1970 and large freshwater species, such as the catfish, by a catastrophic 94 per cent.
15 mar 2021 · The violin plots show the proportion of geographic range threatened by future climate extremes for 11,425 freshwater fish species, different warming levels and two dispersal assumptions.
15 gru 2023 · At least 17% of threatened freshwater fish species are affected by climate change, including decreasing water levels, rising sea levels causing seawater to move up rivers, and shifting seasons.
