Respiratory Tract Disorders in Fishes.
"The piscine respiratory system is represented by gills. Gill diseases are extremely common and may be caused by a large variety of etiologic agents. The gills are in direct contact with water and reflect its quality, for example, pollution, and they also must face the presence of biotic agents, such as viruses, bacteria, fungi, and parasites. Evolution has established many defense mechanisms to combat these agents. Failure of these mechanisms is life-threatening for the fish, due to impaired respiration. Gills are relatively easily accessible for clinical examination and sampling, which facilitates intravital diagnosis."
['Novotny|Ladislav|L|']
D000818:Animals D001424:Bacterial Infections D005393:Fish Diseases D005399:Fishes D005880:Gills D010273:Parasitic Diseases, Animal D014777:Virus Diseases
Parasites Branchitis Gill illness Ichthyopathology