
Tiny Catfish Use Suction to Scale Waterfalls in Rare Brazilian Migration
In an extraordinary display of natural phenomenon thousands of tiny bumblebee catfish (Rhyacoglanis paranensis) were filmed "climbing" a 3- to 13-foot high waterfall in southern Brazil, according to a peer-reviewed study published in the Journal of Fish Biology.
The event which occurred in November 2024 at the Sossego waterfall on the Aquidauana River marks the first documented instance of a fish from the Pseudopimelodidae family exhibiting this waterfall-climbing behavior.
A Moving Ribbon of Bodies
The twilight ascent was first spotted by the Environmental Military Police and later documented in detail by a research team led by Manoela M. F. Marinho of the Federal University of Mato Grosso do Sul (UFMS).
The fish dominated by mature adults, were observed to spread their paired...