The Freshwater Paradox

The video explores the distribution of fish species in freshwater and ocean environments, highlighting the freshwater paradox where freshwater contains more species despite less water volume. Initially, isolation was thought to be the main factor, but recent studies show similar species development rates in rivers and oceans. Lakes, with their unique conditions, produce new species faster, yet rivers have more species. Extinctions and fossil records complicate the understanding, and the paradox remains unresolved, possibly due to a combination of factors like isolation, competition, and extinction.

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