You should start teaching him tricks, Things like come, follow my finger, Take food from my finger, and reward him with a pellet. When you can do that then teach him to swim onto your hand using food as a reward. Getting him used to your hand makes it easier if you ever have to catch him, And reduces his stress if you have do work in the tank. But this can also be a pain, If you are doing work in the tank you have to keep an eye on the fish when moving stuff or cleaning the glass.
When I clean the glass in the tank, All you can hear in my house is " Get out of the way dopey " every few seconds.