Lobsters are economically valuable crustaceans that are a part of the global fisheries and aquaculture. However, production losses are high due to disease outbreaks and unsuitable environmental conditions. Tail fan Necrosis (TFN) syndrome is a degenerative disease of the tail fans of lobsters and crayfish, especially the telson and uropods. The disease is characterised by melanisation, blister formation, exoskeletal erosion, and eventual necrosis of the affected tissues. Various hypotheses have been proposed, including bacterial and viral invasion, mechanical damage, environmental stress, and physiological abnormalities. Due to its complex and multifactorial nature, TFN is often described as a ?wicked problem? in the lobster industry. This article discusses the occurrence, clinical signs, possible causes, and management challenges associated with Tail Fan Necrosis syndrome.