Answer by  
                                                                                          tackleshack (140)
                                                            
                          
                          
                                                          Discus look very similar to their namesake the 'discus', as used in track and field events.  They are a tall, round fish that is very narrow.  This allows the fish to move around tight structure to feed.  They range in color, but you can find most of them with a grey or blue coloration.