noun
ich; white spot disease
A common protozoan infection of freshwater fish, caused by Ichthyophthirius multifiliis, characterized by white spots on the body and fins.
熱帯魚が白点病にかかったら、水温を上げて治療します。
If tropical fish get ich, you treat it by raising the water temperature.
白点病は
White spot disease is a parasitic disease commonly seen in freshwater fish.