Summary:
- This article discusses the surprising intelligence of a small fish called the cleaner wrasse, which is capable of solving complex problems and demonstrating self-awareness, abilities typically associated with larger, more complex animals like mammals.
- Experiments have shown that cleaner wrasses can recognize themselves in a mirror, a cognitive ability that was previously thought to be limited to a few species of mammals, birds, and fish.
- The findings suggest that the cleaner wrasse's brain, despite its small size, is highly capable of advanced cognitive functions, challenging the assumption that intelligence is directly proportional to brain size.