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What is the memory span of a fish2007-11-24 23:41:48

Fish could be trained to return to a feeding area at a certain time. Research in Norway has already shown that fish can be released into a fjord and summoned back to a feeding area when a particular sound is played.

Efforts are under way to set up a similar pilot project in Ghana using timing to control fish stocks.

Mr Gee said he did not know where fish got their reputation for forgetfulness. "It has probably come from a joke," he said.

Any help?

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I can't be accurate in seconds, but it is certainly only a few. That is why a goldfish swims round and round a circular bowl all day. He never gets bored, because he can't remember swimming round it the first time!!

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No The persons being stupid

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In Goldfish - experiments show that once they're taught to perform a certain task in response to a certain stimulus, goldfish will remember the task for several days.

Another example of fish memory is the way Salmon use their sense of smell, (or what's known as olfactory imprinting), to return to the same stream they were born in during mating season. Some species, like the arctic char, can remember the smell of their siblings for days, and others can remember and recognize specific fish who are aggressive opponents.

Also - all fish eventually encounter new types of prey, become efficient at feeding on it, and then remember their new skills up to a month later when they encounter this prey again.