TB

Fish TB Fish TB, also called fish tuberculosis, is an umbrella term for mostly chronic bacterial infections, which can be caused by various bacteria. Fish tuberculosis weakens the fish, after which other pathogens usually cause the death of the fish. Fish infected with fish tuberculosis can be recognized by bulging eyes and a sunken belly. […]

Oodinium

Oodinium Oodinium is a condition similar to white spot. In fact, white spots also appear on the skin of the fish. Unlike the white spot parasite (ichthyophthirius parasite), Oodinium is caused by the Oodinium pillularis parasite, which is much smaller than the white spot parasite. Due to the fine dots on the fish, which looks […]

Chilodonella

Chilodonella Chilodonella is an oval ciliate found mainly on the gills of the fish and at a later stage on the skin. It is a protozoa, these are divided into three categories: Celiates, Flagellates and Sporoza. The disease causes skin cloudiness and the unicellular organisms are between 100 – 150 μm in size. Just compare, […]

Protozoa

Protozoa or protozoa Protozoa is a collective name for single-celled parasites that cause various diseases in fish and it is easily recognized by the fine dots on the skin. All protozoa need water to move around moreover this can even be a very thin layer around bottom particles. Protozoa are divided into four categories according […]

Skinworm

Skinworm Skin flukes or Gyrodactylus are viviparous parasites that mainly nest in the skin of fish. The skin worm grows about 0.3 to 0.5 mm in size. Compare that to a human hair, which is cirac 0.05 mm thick. In appearance, the Gyrodactylus resembles the gill worm. Therefore, they are close relatives of each other. […]

Trichodina

Trichodina Trichodina is a single-celled flagellate that frequently parasitizes pond fish such as koi and goldfish. The parasite is a protozoa that are divided into three categories: Celiates, Flagellates and Sporoza. It is a saucer-shaped parasite with cilia for movement. This parasite is visible only with a (good) microscope. It has an average size of […]

Koi herpes (KHV).

Koi herpes virus or KHV for short The Koi Herpes Virus, also known as KHV, is a highly contagious virus. In most cases, KHV is a deadly disease for pond fish. Fortunately, it is not very common and KHV infection in koi is only transmissible through fish that carry the koi herpes virus. KHV can […]

Costia – Ichthyobodo

Costia or Ichthyobodo Costia or Ichthyobodo parasites are protozoa, single-celled moving organism of the flagellate category. Ichthyobodo parasites can multiply very rapidly on the skin of the fish. In the early stages, the disease is difficult to recognize because these parasites are very small. The size varies between 15 and 20 μm. Just compare, the […]