Peripheral Blood Parameters of Two Species of the Deep-Sea Fish Family Paralepididae

The hematological and cytochemical parameters of the peripheral blood of the spotted barracudina Arctozenus risso and the sharpchin barracudina Paralepis coregonoides (Paralepididae) are studied for the first time from the materials of a survey in the Irminger Sea in 2018. It was shown that erythropoiesis in both fish species studied is approximately the same. Normoblasts and erythrocytes are present. The lymphoid character of the blood of both fish species was established by comparative analysis of leukograms. It was noted that a large proportion of mature segmented forms, i.e., neutrophils responsible for noncongenital nonspecific cellular immunity, is characteristic of sharpchin barracudina.