Leucism

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Leucistic Oscar bred to combine white color form with long finnage. Kurt Auerbach/GNU.


Leucism (pronounced loo-kism) is a genetic condition in which an animal displays reduced skin or scale pigmentation. Unlike albinos, leucistic (loo-kiss-tic) animals have normally colored eyes, while true albinos have pink eyes. Leucistic fishes may be white or a very pale pink. See Convict Cichlid.

In medical references and literature, these terms may be spelled with a k (leukism and leukistic), deriving from the Greek leukos for white.