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 ..
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 ..
A common but lethal disease The ciliated parasite Ichthyophthirius, more commonly known as white spot or Ich, is a very common fish disease capable of affecting virtually all fish species. Ich has a fairly complex life cycle that has a major bearing on treatment methods. The white spot trophont (photo below) forms a nodule under the skin ..
Extremely irritating It is not uncommon to find small populations of the parasite Trichodina on fish. At low levels they don’t pose a threat to fish health. Unlike many parasites it doesn’t actually feed on fish; these parasites only use the fish host as a home and means of transport! However, in large numbers they are extremely ..
Parasites pose a very real risk to to fish All fish are potential hosts to many different species of parasites. Small numbers of parasites are common and probably do little harm. However, all parasites have tremendous reproductive potential and can, under ideal conditions, quickly overwhelm fish in the confines of a tank or pond. Types ..
Skin flukes (Gyrodactylus ) and gill flukes (Dactylogyrus ) and fish health Skin and gill flukes are common fish parasites and in small numbers probably cause little harm. In large numbers both skin and gill flukes represent a serious threat to fish health. Flukes can cause lesions and tissue damage as well as producing side affects such as ..
Dermocystidium. koi Identifying Dermocystidium Dermocystidium. koi is an uncommon fish disease affecting koi although there are reports that other species may be affected. As its name suggests, Dermocystidium is a disease that affects the skin of koi and can be found on the gills, fins or body. It causes raised swellings varying in size from 1-2 cms to ..
A common parasite As with many fish parasites, small numbers of Costia (or more correctly Ichthyobodo) are not uncommon and appear not be detrimental to the fish’s health. In small numbers these parasites seem to live on cellular debris in a commensalistic relationship with their fish host. Costia occasionally live on the skin and gills of healthy fish and it ..
Even one parasite warrants immediate action The parasite Chilodonella is a major threat to fish health and finding even one parasite warrants immediate treatment. Chilodonella is a potentially dangerous parasite for two reasons. First, unlike many parasites, it has a wide range of temperature tolerance and outbreaks often occur at low temperatures when fish are least able to resist. ..
Click the right-hand mouse button if you want to down-load any of the movies (click “save target as….). The file sizes have been kept reasonably small, hopefully without losing too much detail – they will take a minute or two to download- depending on your modem speed. Let them fully download before playing them. If ..
