[Parasite] LYMPHOSARCOMA [Type] virus [Description] Infects muskies and northern pike. More prominent in cooler water (fall, winter). Usually fatal in muskellunge. [Edible] No; lack of scientific understanding [Recommendation] Dispose of fish or entrails in household waste or bury. Never discard into a waterbody [Symptom] 
Cauliflower-like reddish tumor; small to several inches; may spread to internal organs