In 2020 alone, 16 freshwater fish species were declared extinct. Overfishing and invasive species are devastating freshwater fish populations and the climate crisis is especially difficult for fish that cant tolerate changes in temperature.
Why are freshwater animals going extinct?
Habitat destruction, overfishing, and pollution of water from mining and other human activities has resulted in the species being declared endangered.
Are freshwater fish going extinct?
Indeed, 80 species of freshwater fish have already been declared extinct by the IUCN Red List of Threatened Species, including 16 in 2020 alone. Meanwhile, populations of migratory freshwater fish have fallen by 76% since 1970 and mega-fish by a catastrophic 94%.
Are fish at risk of extinction?
Freshwater fish are under threat, with as many as a third of global populations in danger of extinction, according to an assessment. Populations of migratory freshwater fish have plummeted by 76% since 1970, and large fish – those weighing more than 30kg – have been all but wiped out in most rivers.
What happens if you put a shark in freshwater?
In freshwater, which has no salinity, a shark will take in too much water. This can lead to a dulling of the senses, bloating, and eventually, death. Furthermore, since sharks do not have a swim bladder like fish, they rely completely on their livers to help them stay buoyant.
Are sharks in Lake Michigan?
Scientifically, NO sharks have been documented in Lake Michigan. Now, there is always more to the story than the simple one word answer. Across the Great Lakes region, “unofficial” shark sightings seem to emerge every year. These sightings are usually proven to be a hoax.