After years of owning this koi, she just started displaying more beni on her pecs and along her side. Asagi can be quite wiley in an attempt to escape. My asagi is no exception. When stressed its not uncommon to blow out small filaments in their Gills that will bleed for a couple minutes. It's not permanently harmful but does make a mess. I chose not to stress her further by moving her again to clean the water so I apologize.