My first sight of such event... I was not able to take a video immediate as they stop and continue... and chasing others away...
About few days back saw this Cichlid with another one dancing in circle then one of them perform the egg laying action and another look like eating the egg action... they did it round and round for many times and if i get too close.. they will stop a while and then continue again... also one of them very fierce to the rest and will attack anyone that comes close...