costiasis
noun
cos·ti·a·sis
käˈstīəsə̇s
plural costiases
-ˌsēz
: a frequently fatal disease of freshwater fishes due to invasion of the skin by a flagellated protozoan (Costia necatrix)
Word History
Etymology
New Latin, from Costia (genus name of Costia necatrix) + -iasis