Quote:
Originally Posted by Mattgesy
fish have a 2 second brain span, i dont think they could learn that unless it was a big space between them not like a hamster tunnel size
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You're thinking of the common belief of "goldfish have a 2 second memory". I don't know if this is true or not. My experience with goldfish leads me to believe that it's BS. They are capable of exhibiting conditioned responses. ie. Swimming to the surface for food when you approach the tank.
Intelligence in fish varies between species and even between individuals in a particular species.