Goldfish have a memory span of only three seconds.

What was claimed

Our verdict

Inaccurate

Research in fish cognition shows goldfish can remember tasks and associations for weeks, months, and even up to around five months, not just three seconds.

All 3 AI systems agree8 sources citedChecked Jul 2, 2026

Check your own claim

Paste any statement, headline, or AI answer — 3 independent AIs verify it in seconds, with sources.

Key findings

Goldfish have a memory span of only three seconds.

Incorrect96%

All 2 AIs agree

Verified against 8 sources

Detailed Analysis

The statement repeats a common myth that is directly contradicted by multiple scientific studies. Current evidence shows goldfish can remember information for weeks to months, far longer than three seconds.

Why this verdict

The statement repeats a common myth that is directly contradicted by multiple scientific studies.
Current evidence shows goldfish can remember information for weeks to months, far longer than three seconds.

Claims checked

Goldfish have a memory span of only three seconds.

Incorrect97%

Research in fish cognition shows goldfish can remember tasks and associations for weeks, months, and even up to around five months, not just three seconds.[1] [3] [4] [6]

This claim may mislead readers without added context.

What other AI think

Goldfish memories definitely last longer than 3 seconds, and goldfish have much longer memories spanning weeks, months and even years. This is a well-established myth contradicted by decades of scientific research.

Why this verdict

Goldfish memories definitely last longer than 3 seconds, and goldfish have much longer memories spanning weeks, months and even years.
This is a well-established myth contradicted by decades of scientific research.

The statement is a widespread myth and is factually incorrect. Scientific studies and observable training experiments show goldfish retain information for much longer than three seconds.

Why this verdict

The statement is a widespread myth and is factually incorrect.
Scientific studies and observable training experiments show goldfish retain information for much longer than three seconds.

Claims checked

Goldfish have a memory span of only three seconds.

Incorrect95%

Controlled studies and training experiments demonstrate goldfish can learn and remember tasks, locations, and feeding schedules for days, weeks, or longer, so a three-second memory is incorrect.

This claim may mislead readers without added context.

Share this result

Try DoubleChecks