How do you train my goldfish to follow my finger or something?

Answer 1

Theres a few ways. Goldfish are more intelligent than most people make out, and they dont have a 3 second memory.You can Get them to eat out your hand, and follow your finger round the tank. Harder things, you can also get them to play fetch, swim through hoops etc (as iv seen) You need to buy a special training pack for that though.

To get it to eat out your hand, when you feed it, make sure you tap/splash the water a little as you put the food in. Make sure every day you put the food in the same place, so it will get used to it, then eventually when you tap the water, it will come up because it thinks theres food, then it will be able to eat out your hand.

TO get it to follow your finger, im not sure. My old one did, you just talk to it a lot and it gets used to you. When it got used to my company, when i walked to one side of the room itd follow me to that side of his tank (: They can hear you beleave it or not, just cant see very well.
You cannot.

Answer 2

You can't train a Goldfish, they are to independent to listen to anyone else, and only trust themselves to make decisions! Had to make a bit of a joke with this one, but who knows maybe you can, and food always seems to work the best!