Remarkable footage shows hundreds of shellear fish scrambling up Luvilombo Falls in the Democratic Republic of the Congo.

In November 2024, members of Brazil’s environmental military police and scientists observed a “massive aggregation” of small catfish making their way up waterfalls in Brazil. These first-of-their-kind ...

By Marta Serafinko April 7 (Reuters) - A species of small fish has been observed by the thousands climbing a vertical ...