Goldfish Memory Myth Debunked by Science and Student Experiments
Translated & summarized from Globes by baba
The popular belief that goldfish have only a three-second memory is a myth, with scientific experiments and academic studies showing they can remember for weeks or months. A 2008 experiment by student Rory Stokes demonstrated this, as did research from the University of Plymouth and Ben-Gurion University. The myth may have originated from poor living conditions historically imposed on goldfish, which are now being addressed by animal welfare regulations.
The story in 6 lines · by baba
- Goldfish memory myth debunked: they remember for weeks and months, not three seconds.
- Student Rory Stokes' 2008 experiment showed goldfish learning and recalling feeding cues.
- University of Plymouth study found goldfish could remember specific feeding times.
- Ben-Gurion University researchers taught goldfish to navigate a robotic vehicle.
- Myth may stem from poor historical living conditions in small bowls.
- Animal welfare concerns are leading to bans on inadequate goldfish housing.
The common idiom suggesting goldfish have a three-second memory is a myth, according to recent research and experiments. This popular notion, often used to describe forgetfulness, posits that goldfish constantly rediscover their surroundings as if seeing them for the first time. However, scientific evidence indicates that goldfish possess significantly better memories, capable of recalling learned information for days, weeks, and even months.
The survival of any species with such a short memory would be highly improbable, as they would struggle to remember food sources, predators, or safe havens. This evolutionary argument alone casts doubt on the three-second memory myth.
A notable experiment was conducted in 2008 by 15-year-old Australian student Rory Stokes. For his school science project, Stokes trained goldfish to associate feeding time with a red Lego brick. Over three weeks, the fish learned to reach the brick much faster, eventually waiting for it even before food was added to the water. After a six-day break, the goldfish still located the brick within seconds, demonstrating a strong recall.
Academic studies corroborate these findings. In 2003, researchers at the University of Plymouth trained goldfish to operate a lever for food, finding they could learn to do so only during specific feeding hours, indicating memory of both action and time. More recently, in 2022, researchers at Ben-Gurion University in Israel taught goldfish to navigate a robotic "car" to reach designated points for food, proving they have memory, navigation skills, and spatial awareness.
The origin of the myth may stem from the historical practice of keeping goldfish in small, round glass bowls, which provided poor living conditions. The limited oxygen, distorted vision, and lack of hiding places made it easier for observers to rationalize the fish's behavior by assuming a short memory. Today, some European countries have banned such conditions due to animal welfare concerns. In conclusion, goldfish have far longer memories than commonly believed, and the phrase "memory of a goldfish" might even be considered a compliment.