[New trematode species from commercial fish of the Indian Ocean].

New for the science three trematode species are described--Aporocotyle nototheniae sp. nov., Prosorchis saicevi sp. nov., Pseudocardicola emmelichthy sp. nov.--from commercial fishes of the Indian Ocean. New genus Pseudocardicola gen. nov. and new subfamily Pseudocardicolinae subfam. nov. are substantiated for Pseudocardicola emmelichthy species. The differential diagnoses for all three trematode species are given.