Rare catfish species filmed climbing waterfalls

Thousands of bumblebee catfish (Rhyacoglanis paranensis) scaled 1–4 m falls on Brazil’s Aquidauana River at dusk in the rainy season. The behavior likely reflects upstream spawning migration and underscores the need to design flows and barriers that accommodate small migratory fishes.

Read the full story at 🔗https://phys.org/news/2025-08-world-r...

Video credit: Journal of Fish Biology (2025). DOI: 10.1111/jfb.70158