train

Majority of the people who I have met have managed to train their fish to only eat pellets, massivores, or some form of fish meat. I have only known to feed them feeders. That is what my fish stores fed them. So why is it bad to feed fish feeders? What are the risks? And how do I train my fish...

Good Day fellow fish keepers. Any suggestion on how to train silver arowana to recognize me? cuz when i go near its aquarium he easily spooked and he swim away. any suggestion on how to train them?