Goldfish Synchronized Swimming.

My money says this is not at all real. For instance, watch how the fishes (side) fins flap in a machine-like manner. There's no randomness, the fish move and wiggle way too perfectly. Like someone posted on YT, probably uses magnets under the tank.

All right, they might actually be real fish, but something else is going on. The table/tank set-up is suspicious. Maybe there are some kind of glass partitions in the water; something's up.

(from YT)

Fantesca:
"I'm sure it hurt when they shoved the magnets down their throats, or the iron pellet or whatever."

I've actually seen this done. I was at a shopping mall watching some fish in a tank, when some random chinese dude walked up and started wiggling his fingers. The fish all started to swim in sync. I figure it has something to do with "schooling", they see the wiggling and think its other fish and follow it.

but doesnt a goldfishes memory only last for 5 minutes then forgets everything it learns?

i'm pretty sure that's been shown to be b.s. matt

Make them jump in a ring of fire now.

=D

My concern is that terrorists may use this technique to train goldfish to deliver bio-weapons to critical water supply points in the U.S.

Something's got to be done!