Case details 6th April 2000: Client phoned to say that one koi was laying on the bottom, not eating and was generally lethargic. The fish had been like this for several weeks but kept rallying around – could I tell him what the problem was? Lacking the confidence of many in the aquatic trade I said no – ..
Koi parasites and fungus These are two problems that regularly affect koi health, Both can be dealt with fairly simply when they are at an early stage. Fungus, if allowed to spread, will quickly overwhelm fish. Large numbers of parasites can cause physical damage to both skin and gills and are often the precursor to ..
Koi bacterial disease A serous threat that requires prompt action Bacterial disease, ulcers, fin-rot and stress Two things are important to minimize the likelihood of serious bacterial infections such as ulcers affecting our koi. Firstly, early diagnosis and treatment is vital to limit the spread and severity of infection, both in individual fish and throughout ..
Fish disease and antibiotics Antibiotic baths or dips provide another route for the treatment of bacterial fish diseases. However, baths and dips are not as effective as medicated food or injections for treating systemic infections or advanced ulceration. In general the best results come from antibiotic injections. Baths and dips are probably best used for ..
Fish disease is a fact of life and in common with all pet owners, fish-keepers need to be able to recognize the signs of ill-health in their fishy charges. These pages give a comprehensive view of common diseases including typical signs of disease and how to systematically diagnosis both health problems and their causes. An ..
Bacterial ulcers a common, but difficult problem Bacterial ulcers are a common fish disease problem, particularly with ornamental pond fish such as goldfish and koi. They are one of the most difficult problems to deal with, especially if large numbers of fish are affected. Dealing effectively with bacterial ulcers can be time-consuming and really requires ..
Fungus and water moulds – what are they? Fungus is a common fish disease that can prove fatal if not treated early. Most fungal infections involve water moulds from the class Oomycetes (a group of fungi with similar characteristics). Although there are several water moulds that can affect fish, the most common and significant water ..
Identifying fin rot Fin rot is a general term for necrotic loss of fin tissue, resulting in split or ragged fins. It is usually the edge of the fin that is attacked, although occasionally a hole may appear in the middle of the fin. The appearance of fin rot can vary between a distinct, semi-circular ..
Bacterial infections and diseases Common and difficult problems to deal with Bacterial fish diseases Bacterial fish diseases and infections are very common in fish keeping and are probably one of the hardest health problems to deal with effectively. However, with a basic understanding of how bacteria cause disease and how to recognize bacterial infections it ..