ANIMALS / EVIDENCE FILE 01
Goldfish have a 3-second memory
Myth busted
Goldfish can remember a learned task for days, far longer than three seconds.
The bit that matters
- In one experiment, control goldfish remembered a trained avoidance task three days later.
- That tested interval is not a maximum memory span.
Follow the evidence
Research and a separate source check inform this explanation. Keep the qualifications with the fact.
- Inhibition of Memory Consolidation After Active Avoidance Conditioning by Antisense Intervention with Ependymin Gene Expression (opens in a new tab)
Journal of Neurochemistry 65, 1465-1471; Schmidt, Brysch, Rother and Schlingensiepen; Max Planck repository · Retrieved 2026-10-16
Uninjected control goldfish remembered the active avoidance task three days after acquisition; twelve control fish are reported.
One discovery leads to another.
Claim version 1 · Evidence reviewed 16 October 2026 · No historical origin is asserted without evidence.