Thousands of tiny fish climbing a waterfall? It sounds impossible—but it’s real. 🐟
In the Congo Basin, shellear fish (Parakneria thysi) have been observed scaling a 50-foot vertical waterfall using specialized fins and hook-like structures. This incredible journey can take up to 10 hours, with fish moving in bursts and resting along the way.
Scientists believe this behavior may be part of a migration to safer or more resource-rich environments. But the discovery also raises concerns: illegal fishing and water extraction could threaten this fragile natural process.
This is the first documented case of such behavior in Africa—and it’s a powerful reminder of how much we still have to learn about the natural world.
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