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Story summary
- Parakneria thysi, a small fish, was observed climbing 15-meter Luvilombo Falls in the Democratic Republic of Congo during seasonal floods.
- The fish ascend the vertical rock face using adaptations such as hook-like projections on their fins.
- The climb lasts nearly 10 hours.
- Smaller individuals are more successful than larger ones.
- The species faces threats from illegal fishing and water extraction, underscoring the need for further Congo Basin fish-behavior research.
