Ich in Fish, Ichthyophthirius Multifiliis, White Spot Disease, Ick Ich in Fish. (Ichthyophthirius Multifiliis) (White Spot Disease) (Ick) ... The name Ichthyophthirius multifiliis translates to "fish louse with many children" and is given the nickname Ich, Ick or White Spot Disease. ... Pictures of Mixed Breed D