Goldfish only have a memory span of 3 seconds.
Analysis
The statement that goldfish only have a memory span of 3 seconds is incorrect. Multiple sources indicate that goldfish have memory spans that can last for weeks, months, and even years. Research has shown that goldfish can remember things for at least five months, and their cognitive abilities are more complex than the myth suggests. Therefore, the overwhelming evidence contradicts the claim of a mere 3-second memory span, making the statement factually incorrect.
Sources
Scientists have proven that goldfish memory spans are nowhere near as short as three seconds
These results suggest that the ability of goldfish to retain and recall an explicit memory is impressive considering its small brain size, short life span, and lowest place on the vertebrate hierarchy...
the freshwater fish are much smarter than you might think, and studies have repeatedly shown that their memories can actually span several months.
Goldfishes actually have memories that can last for weeks, months and even years.
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