A study was done on the developmental progress of Schizothorax zarodni during of which a mass of cells at posterior part (near the caudal fin) of the 1 DAH larvae was observed (cross sectioning was done). The observed mass appeared as a ball shaped mass which then proceeded to form a hollow ball containing some sort of 3 parted digitate structure (Please check the video file) and was not observed at the next day (second day post hatching). Now I am just wondering if I can take the chance to get your idea about the nature and the fate of this structure or maybe organ.