Ок, тераме понатаму
http://www.dailymail.co.uk/sciencetech/ ... onths.html
The creatures said to have a mere three-second memory span can actually recall information for up to five months.
Researchers from the Technion Institute of Technology in Israel trained young fish to associate a sound played through a loudspeaker with feeding time.
Each time they played a particular sound, the fish would return for food.
After a month of training, the fish were released into the sea, where they were left to their own devices.
Four to five months later, when they had become adults and ready for marketing, the sound was played again and the fish returned.
Many fishes - such as minnows, sticklebacks, and guppies - are capable of the same intellectual feats as, for example, rats or mice.
'They can learn their way around mazes, they can learn to recognise other fish, and they can remember which individuals are better competitors.'