After the parasite feeds, the nodules fall off and the protozoan enters an encapsulated dividing stage, the tomont, which adheres to plants and gravel. The tomont divides up to 10 times by fission ...

Reviewed by Nick Saint-Erne Ich, sometimes mistakenly spelled as "Ick," is caused by an external protozoan parasite that ...

Theront: The motile, infective life stage of the parasite that actively seeks out fish hosts. Tomont: The non-infective, reproductive stage in which the parasite forms a cyst and undergoes division.