[The morphological aspects in a biomedical assessment of hydrobionts].

The morphological data are presented on the condition of internal organs in experimental animals during hygienic examination of a number of traditional fish species, as well as the results of the morphological study of the nature of pigment spots on the skin of perch. The problem has been considered on the importance of morphological investigations in the study of harmlessness of hydrobionts. A conclusion has been made on the necessity of conducting thorough morphological investigations of hydrobionts and those structural changes that can be induced by their usage.