Adding New Fish To Populated Tank

[Ardvark]

I've been given a tip which may have already done the rounds. If so I apologize for repeating it. After you have floated the bag of new fish in the tank to equalise the water temp and before releasing into  the tank, put some food in so the existing fish has something to distract them from the new fish. Object of the exercise is for the new fish to have less stress from the tanks population.