That nice to hear,sorry about asking but so many people go out and just buy one without realising that they need to be in groups and grow BIG.I have 5 and like you say they do follow each other around in a line,biggest first smallest last,definately one of my favourites.Jazz_UK said:Cat fish crazy - I have 3 Bala sharks and they all swim around in a line, almost if they are attached to each other.