Attached to the branchio cranium. The bony, comb like structures which prevent large objects from entering and damaging the gills Gill Rot Fungal infection of the gills , sometimes also called Branchiomycosis. Caused by the fungus Branchiamyces sp . The gills consist of many feathery like filaments which comprise a large surface area. The gills are covered by a film of mucous , which, with the tissues forms an ideal surface for pathogens to attach to as the water passes the gills.
Damaged gills are one of the main areas of infection.
This is done in an attempt to protect the gills and prevent contaminants form entering the body, see Hyperplasia . This enables the animal to carry on life as normal, with it's eggs secure and protected. Found in all living organisms as a constituent of the glycerides. Sometimes used for binding chemicals such as antibiotics to feed pellets, although not as effective as oil as the coating is quickly washed off. Formulations may contain diluted amounts.