can't you just look it up? the mythbusters thing I mean??
hang on.. I'll do a search right now...
OK I found this:
http://ask.yahoo.com/20051129.html
The MythBusters TV show taught some goldfish to swim through a maze, noting that their time got better on each successive run. And an interesting response to the AnswerBag Forum describes goldfish memory as "selective" -- they have a general idea of what happened on a previous occasion, they're just not sure what. We empathize.
And on the mythbusters website it shows that the episode whas #11 season one but does not give a video clip.
And lastly, here is a recap from another website...
http://kwc.org/blog/archives/2004/20..._trombone.html
Three-Second Goldfish Memory
This myth states that goldfish only have three seconds of memory, so you shouldn't feel bad when you stick them in a small fish bowl -- by the time they make it around the bowl, it's all new to them.
This silly myth was mainly an opportunity to show off the fact that Jamie really knows aquarium fish (apparently he trained a goldfish to ring a bell). They set up the mythbusting as a competition between Adam and Jamie to see who could train their fish to swim through a maze (four dividers in an aquarium with a hole in each) the quickest.
Jamie busted out bright colored rings, which he used to condition the fish to associate with food. Adam busied himself with trying to prevent the fish from dying. When it came to competition time, Jamie's fish zoomed from one side of the tank to the other. Adam's aimlessly wandered back and forth and never made it more than halfway across the course.
K, that's it. There's definitely more if you choose to look through the endless search results but this is what I found just typing in "mythbusters goldfish memory"